\setmathfont \tl_case:Nnn error

[jokuha]

With fontspec [2015/07/22 v2.4d Font selection for XeLaTeX and LuaLaTeX] from the current MacTeX updates I get an error when setting the math font.

Minimal example:

\documentclass{scrartcl}
\usepackage{fontspec}%
\usepackage{unicode-math}%
\setmathfont{TeX Gyre Pagella Math}
\begin{document}
\end{document}

Error message

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

./minimal.tex:4: Missing $ inserted.
<inserted text> 
$

Complete log

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(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/ltxcmds.sty
Package: ltxcmds 2011/11/09 v1.22 LaTeX kernel commands for general use (HO)
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\Gread@gobject=\count287
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\Gin@req@height=\dimen259
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. LaTeX info: "xparse/define-command"
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. Defining command \__fontspec_post_arg:w with sig. 'mmO{}' on line 45.
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. Defining command \defaultfontfeatures with sig. 't+om' on line 158.
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. Defining command \addfontfeatures with sig. 'm' on line 214.
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. Defining command \newfontfeature with sig. 'mm' on line 225.
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. Defining command \newAATfeature with sig. 'mmmm' on line 233.
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. Defining command \newfontlanguage with sig. 'mm' on line 305.
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. Defining command \DeclareFontsExtensions with sig. 'm' on line 325.
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\l__fontspec_tmp_int=\count288
LaTeX Info: Redefining \itshape on input line 2154.
LaTeX Info: Redefining \slshape on input line 2159.
LaTeX Info: Redefining \scshape on input line 2164.
LaTeX Info: Redefining \upshape on input line 2169.

(/usr/local/texlive/2015/texmf-dist/tex/latex/fontspec/fontspec.cfg)))
(/usr/local/texlive/2015/texmf-dist/tex/latex/unicode-math/unicode-math.sty
Package: unicode-math 2014/06/30 v0.7f Unicode maths in XeLaTeX and LuaLaTeX

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Package: ifxetex 2010/09/12 v0.6 Provides ifxetex conditional
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Package: l3keys2e 2015/07/14 v5662 LaTeX2e option processing using LaTeX3 keys
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Package: catchfile 2011/03/01 v1.6 Catch the contents of a file (HO)

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Package: etexcmds 2011/02/16 v1.5 Avoid name clashes with e-TeX commands (HO)
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Package: fix-cm 2015/01/14 v1.1t fixes to LaTeX

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File: ts1enc.def 2001/06/05 v3.0e (jk/car/fm) Standard LaTeX file
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Package: filehook 2011/10/12 v0.5d Hooks for input files

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Package: filehook-scrlfile 2011/01/03 v0.1 filehook patch for scrlfile package
Package filehook Info: Package 'scrlfile' detected and compensated for on input 
line 102.
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Variant \tl_put_right:cx already defined; not changing it on line 67
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\g_um_fam_int=\count289
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. LaTeX info: "xparse/define-command"
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. Defining command \unimathsetup with sig. 'm' on line 156.
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(/usr/local/texlive/2015/texmf-dist/tex/latex/unicode-math/unicode-math-luatex.
sty
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y
Package: lualatex-math 2014/08/18 v1.4 Patches for mathematics typesetting with 
LuaLaTeX
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Package: etoolbox 2015/05/04 v2.2 e-TeX tools for LaTeX (JAW)
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(/usr/local/texlive/2015/texmf-dist/tex/lualatex/lualatex-math/lualatex-math.lua
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Lua module: lualatex-math 2013/08/03 1.3 Patches for mathematics typesetting wit
h LuaLaTeX
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. lualatex-math info: "patch-macro"
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. I'm going to patch macro \new@mathgroup.
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)
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\g_um_primekern_muskip=\muskip16
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\g__file_internal_ior=\read1
luaotfload | cache : Lookup cache loaded from /Users/jkuepper/Library/texlive/20
15/texmf-var/luatex-cache/generic/names/luaotfload-lookup-cache.luc.
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"(compiling luc: /usr/local/texlive/2015/texmf-var/luatex-cache/generic/font
s/otf/texgyrepagella-math.luc)(load luc: /Users/jkuepper/Library/texlive/2015/te
xmf-var/luatex-cache/generic/fonts/otf/texgyrepagella-math.luc)
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
\g__fontspec_family_TeXGyrePagellaMath_int=\count292
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
.................................................
. fontspec info: "no-font-shape"
. 
. Could not resolve font TeX Gyre Pagella Math/B (it probably doesn't exist).
.................................................
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | aux : font no 21 (TeXGyrePagellaMath-Regular) does not define featu
re smcp for script math with language dflt
luaotfload | aux : no font with id 21
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
.................................................
. fontspec info: "defining-font"
. 
. Font family 'TeXGyrePagellaMath(0)' created for font 'TeX Gyre Pagella Math'
. with options
. [Renderer=Basic,BoldItalicFont={},ItalicFont={},Script=Math,SizeFeatures={{Siz
e=10-},{Size=7-10,Font=TeX
. Gyre Pagella Math,Style=MathScript},{Size=-7,Font=TeX Gyre Pagella
. Math,Style=MathScriptScript}}].
. 
. This font family consists of the following shapes:
. 
. * 'normal' with NFSS spec.:
. 
. <10->"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;"<7-10>"TeXGyrePa
gellaMath:mode=base;script=math;language=DFLT;+ssty=0;"<-7>"TeXGyrePagellaMath:m
ode=base;script=math;language=DFLT;+ssty=1;"
. 
. * 'small caps' with NFSS spec.:
. 
. and font adjustment code:
. 
.................................................
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
LaTeX Font Info:    Encoding `OT1' has changed to `EU2' for symbol font
(Font)              `operators' in the math version `normal' on input line 4.
LaTeX Font Info:    Overwriting symbol font `operators' in version `normal'
(Font)                  OT1/cmr/m/n --> EU2/TeXGyrePagellaMath(0)/m/n on input l
ine 4.
LaTeX Font Info:    Encoding `OT1' has changed to `EU2' for symbol font
(Font)              `operators' in the math version `bold' on input line 4.
LaTeX Font Info:    Overwriting symbol font `operators' in version `bold'
(Font)                  OT1/cmr/bx/n --> EU2/TeXGyrePagellaMath(0)/bx/n on input
 line 4.
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
.................................................
. fontspec info: "no-font-shape"
. 
. Could not resolve font TeX Gyre Pagella Math/B (it probably doesn't exist).
.................................................
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | aux : font no 21 (TeXGyrePagellaMath-Regular) does not define featu
re smcp for script math with language dflt
luaotfload | aux : no font with id 21
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
.................................................
. fontspec info: "defining-font"
. 
. Font family 'TeXGyrePagellaMath(1)' created for font 'TeX Gyre Pagella Math'
. with options
. [Renderer=Basic,BoldItalicFont={},ItalicFont={},Script=Math,SizeFeatures={{Siz
e=10-},{Size=7-10,Font=TeX
. Gyre Pagella Math,Style=MathScript},{Size=-7,Font=TeX Gyre Pagella
. Math,Style=MathScriptScript}},Scale=1.00001,FontAdjustment={\fontdimen
. 8\font =471859.2sp\relax \fontdimen 9\font =307363.84sp\relax \fontdimen
. 10\font =307363.84sp\relax \fontdimen 11\font =436469.76sp\relax \fontdimen
. 12\font =203816.96sp\relax \fontdimen 13\font =231997.44sp\relax \fontdimen
. 14\font =231997.44sp\relax \fontdimen 15\font =193986.56sp\relax \fontdimen
. 16\font =152043.52sp\relax \fontdimen 17\font =0sp\relax \fontdimen 18\font
. =152043.52sp\relax \fontdimen 19\font =76021.76sp\relax \fontdimen 20\font
. =0pt\relax \fontdimen 21\font =0pt\relax \fontdimen 22\font =163840sp\relax
. }].
. 
. This font family consists of the following shapes:
. 
. * 'normal' with NFSS spec.:
. 
. <10->s*[1.00001]"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;"<7-10
>s*[1.00001]"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;+ssty=0;"<-7
>s*[1.00001]"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;+ssty=1;"
. 
. * 'small caps' with NFSS spec.:
. 
. and font adjustment code:
. \fontdimen 8\font =471859.2sp\relax \fontdimen 9\font =307363.84sp\relax
. \fontdimen 10\font =307363.84sp\relax \fontdimen 11\font =436469.76sp\relax
. \fontdimen 12\font =203816.96sp\relax \fontdimen 13\font =231997.44sp\relax
. \fontdimen 14\font =231997.44sp\relax \fontdimen 15\font =193986.56sp\relax
. \fontdimen 16\font =152043.52sp\relax \fontdimen 17\font =0sp\relax
. \fontdimen 18\font =152043.52sp\relax \fontdimen 19\font =76021.76sp\relax
. \fontdimen 20\font =0pt\relax \fontdimen 21\font =0pt\relax \fontdimen
. 22\font =163840sp\relax 
.................................................
LaTeX Font Info:    Encoding `OMS' has changed to `EU2' for symbol font
(Font)              `symbols' in the math version `normal' on input line 4.
LaTeX Font Info:    Overwriting symbol font `symbols' in version `normal'
(Font)                  OMS/cmsy/m/n --> EU2/TeXGyrePagellaMath(1)/m/n on input 
line 4.
LaTeX Font Info:    Encoding `OMS' has changed to `EU2' for symbol font
(Font)              `symbols' in the math version `bold' on input line 4.
LaTeX Font Info:    Overwriting symbol font `symbols' in version `bold'
(Font)                  OMS/cmsy/b/n --> EU2/TeXGyrePagellaMath(1)/bx/n on input
 line 4.
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
luaotfload | load : Lookup/name: "TeX Gyre Pagella Math" -> "texgyrepagella-math
.otf"
.................................................
. fontspec info: "no-font-shape"
. 
. Could not resolve font TeX Gyre Pagella Math/B (it probably doesn't exist).
.................................................
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | aux : font no 21 (TeXGyrePagellaMath-Regular) does not define featu
re smcp for script math with language dflt
luaotfload | aux : no font with id 21
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
.................................................
. fontspec info: "defining-font"
. 
. Font family 'TeXGyrePagellaMath(2)' created for font 'TeX Gyre Pagella Math'
. with options
. [Renderer=Basic,BoldItalicFont={},ItalicFont={},Script=Math,SizeFeatures={{Siz
e=10-},{Size=7-10,Font=TeX
. Gyre Pagella Math,Style=MathScript},{Size=-7,Font=TeX Gyre Pagella
. Math,Style=MathScriptScript}},Scale=0.99999,FontAdjustment={\fontdimen
. 8\font =39321.6sp\relax \fontdimen 9\font =78643.2sp\relax \fontdimen
. 10\font =78643.2sp\relax \fontdimen 11\font =78643.2sp\relax \fontdimen
. 12\font =306708.48sp\relax \fontdimen 13\font =0pt\relax }].
. 
. This font family consists of the following shapes:
. 
. * 'normal' with NFSS spec.:
. 
. <10->s*[0.99999]"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;"<7-10
>s*[0.99999]"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;+ssty=0;"<-7
>s*[0.99999]"TeXGyrePagellaMath:mode=base;script=math;language=DFLT;+ssty=1;"
. 
. * 'small caps' with NFSS spec.:
. 
. and font adjustment code:
. \fontdimen 8\font =39321.6sp\relax \fontdimen 9\font =78643.2sp\relax
. \fontdimen 10\font =78643.2sp\relax \fontdimen 11\font =78643.2sp\relax
. \fontdimen 12\font =306708.48sp\relax \fontdimen 13\font =0pt\relax 
.................................................
LaTeX Font Info:    Encoding `OMX' has changed to `EU2' for symbol font
(Font)              `largesymbols' in the math version `normal' on input line 4.

LaTeX Font Info:    Overwriting symbol font `largesymbols' in version `normal'
(Font)                  OMX/cmex/m/n --> EU2/TeXGyrePagellaMath(2)/m/n on input 
line 4.
LaTeX Font Info:    Encoding `OMX' has changed to `EU2' for symbol font
(Font)              `largesymbols' in the math version `bold' on input line 4.
LaTeX Font Info:    Overwriting symbol font `largesymbols' in version `bold'
(Font)                  OMX/cmex/m/n --> EU2/TeXGyrePagellaMath(2)/bx/n on input
 line 4.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing $ inserted.
<inserted text> 
$
l.4 \setmathfont{TeX Gyre Pagella Math}

I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

./minimal.tex:4: LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.4 \setmathfont{TeX Gyre Pagella Math}

You're in trouble here.  Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.

luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
LaTeX Font Info:    Font shape `EU2/TeXGyrePagellaMath(1)/m/n' will be
(Font)              scaled to size 10.00015pt on input line 4.
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
LaTeX Font Info:    Font shape `EU2/TeXGyrePagellaMath(1)/m/n' will be
(Font)              scaled to size 7.40016pt on input line 4.
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
LaTeX Font Info:    Font shape `EU2/TeXGyrePagellaMath(1)/m/n' will be
(Font)              scaled to size 5.5001pt on input line 4.
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
LaTeX Font Info:    Font shape `EU2/TeXGyrePagellaMath(2)/m/n' will be
(Font)              scaled to size 9.99985pt on input line 4.
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
LaTeX Font Info:    Font shape `EU2/TeXGyrePagellaMath(2)/m/n' will be
(Font)              scaled to size 7.39993pt on input line 4.
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
LaTeX Font Info:    Font shape `EU2/TeXGyrePagellaMath(2)/m/n' will be
(Font)              scaled to size 5.49994pt on input line 4.
luaotfload | load : Lookup/name: "TeXGyrePagellaMath" -> "texgyrepagella-math.ot
f"
./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing control sequence inserted.
<inserted text> 
\inaccessible 
l.4 \setmathfont{TeX Gyre Pagella Math}

Please don't say `\def cs{...}', say `\def\cs{...}'.
I've inserted an inaccessible control sequence so that your
definition will be completed without mixing me up too badly.
You can recover graciously from this error, if you're
careful; see exercise 27.2 in The TeXbook.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing control sequence inserted.
<inserted text> 
\inaccessible 
l.4 \setmathfont{TeX Gyre Pagella Math}

Please don't say `\def cs{...}', say `\def\cs{...}'.
I've inserted an inaccessible control sequence so that your
definition will be completed without mixing me up too badly.
You can recover graciously from this error, if you're
careful; see exercise 27.2 in The TeXbook.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> \
 cs_gset_protected_nopar:Npx\{\exp_not:c{\cs_to_str:N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> \cs_gset_protected_nopar:
                         Npx\{\exp_not:c{\cs_to_str:N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> \cs_gset_protected_nopar:Npx\
                             {\exp_not:c{\cs_to_str:N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> \cs_gset_protected_nopar:Npx\{\
                               exp_not:c{\cs_to_str:N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> \cs_gset_protected_nopar:Npx\{\exp_not:
                                       c{\cs_to_str:N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> \cs_gset_protected_nopar:Npx\{\exp_not:c{\
                                          cs_to_str:N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> ...set_protected_nopar:Npx\{\exp_not:c{\cs_to_str:
                                                  N\backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<argument> ...t_protected_nopar:Npx\{\exp_not:c{\cs_to_str:N\
                                                  backslash_sym}}
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Argument of \__tl_rescan:w has an extra }.
<inserted text> 
\par 
l.4 \setmathfont{TeX Gyre Pagella Math}

I've run across a `}' that doesn't seem to match anything.
For example, `\def\a#1{...}' and `\a}' would produce
this error. If you simply proceed now, the `\par' that
I've just inserted will cause me to report a runaway
argument that might be the root of the problem. But if
your `}' was spurious, just type `2' and it will go away.

Runaway argument?
\prg_do_nothing: \cs_gset_protected_nopar:Npx {{\exp_not:c {\cs_to_str:N \ETC.
./minimal.tex:4: Paragraph ended before \__tl_rescan:w was complete.
<to be read again> 
\par 
l.4 \setmathfont{TeX Gyre Pagella Math}

I suspect you've forgotten a `}', causing me to apply this
control sequence to too much text. How can we recover?
My plan is to forget the whole thing and hope for the best.

./minimal.tex:4: Undefined control sequence.
<everyeof> :
 :\exp_not:N 
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
<recently read> :

l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Extra }, or forgotten \endgroup.
<recently read> }

l.4 \setmathfont{TeX Gyre Pagella Math}

I've deleted a group-closing symbol because it seems to be
spurious, as in `$x}$'. But perhaps the } is legitimate and
you forgot something else, as in `\hbox{$x}'. In such cases
the way to recover is to insert both the forgotten and the
deleted material, e.g., by typing `I$}'.

./minimal.tex:4: Extra }, or forgotten \endgroup.
\use:x ...s_set_nopar:Npx \l__exp_internal_tl {#1}
                                                  \l__exp_internal_tl 
l.4 \setmathfont{TeX Gyre Pagella Math}

I've deleted a group-closing symbol because it seems to be
spurious, as in `$x}$'. But perhaps the } is legitimate and
you forgot something else, as in `\hbox{$x}'. In such cases
the way to recover is to insert both the forgotten and the
deleted material, e.g., by typing `I$}'.

./minimal.tex:4: Missing $ inserted.
<inserted text> 
$
l.4 \setmathfont{TeX Gyre Pagella Math}

I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

./minimal.tex:4: Missing \endgroup inserted.
<inserted text> 
\endgroup 
l.4 \setmathfont{TeX Gyre Pagella Math}

I've inserted something that you may have forgotten.
(See the <inserted text> above.)
With luck, this will get me unwedged. But if you
really didn't forget anything, try typing `2' now; then
my insertion and my current dilemma will both disappear.

./minimal.tex:4: Missing } inserted.
<inserted text> 
}
l.4 \setmathfont{TeX Gyre Pagella Math}

I've inserted something that you may have forgotten.
(See the <inserted text> above.)
With luck, this will get me unwedged. But if you
really didn't forget anything, try typing `2' now; then
my insertion and my current dilemma will both disappear.

./minimal.tex:4: Missing } inserted.
<inserted text> 
}
l.4 \setmathfont{TeX Gyre Pagella Math}

I've inserted something that you may have forgotten.
(See the <inserted text> above.)
With luck, this will get me unwedged. But if you
really didn't forget anything, try typing `2' now; then
my insertion and my current dilemma will both disappear.

./minimal.tex:4: Extra \endgroup.
\um_set_big_operator:nnn ...:N #2_sym}\group_end: 
                                                  \um_set_mathchar:cNnn {\cs...
l.4 \setmathfont{TeX Gyre Pagella Math}

Things are pretty mixed up, but I think the worst is over.

./minimal.tex:4: Too many }'s.
\um_set_mathsymbol:nNNn ...rator:nnn {#1}{#2}{#4}}
                                                  \mathopen {\um_set_math_op...
l.4 \setmathfont{TeX Gyre Pagella Math}

You've closed more groups than you opened.
Such booboos are generally harmless, so keep going.

./minimal.tex:4: Missing $ inserted.
<inserted text> 
$
l.4 \setmathfont{TeX Gyre Pagella Math}

I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

./minimal.tex:4: LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.4 \setmathfont{TeX Gyre Pagella Math}

You're in trouble here.  Try typing  <return>  to proceed.
If that doesn't work, type  X <return>  to quit.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Extra }, or forgotten $.
\um_set_mathsymbol:nNNn ...1}{#4}{##1}}\limits }}}
                                                  {\um_set_mathcode:nnn {#4}...
l.4 \setmathfont{TeX Gyre Pagella Math}

I've deleted a group-closing symbol because it seems to be
spurious, as in `$x}$'. But perhaps the } is legitimate and
you forgot something else, as in `\hbox{$x}'. In such cases
the way to recover is to insert both the forgotten and the
deleted material, e.g., by typing `I$}'.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing control sequence inserted.
<inserted text> 
\inaccessible 
l.4 \setmathfont{TeX Gyre Pagella Math}

Please don't say `\def cs{...}', say `\def\cs{...}'.
I've inserted an inaccessible control sequence so that your
definition will be completed without mixing me up too badly.
You can recover graciously from this error, if you're
careful; see exercise 27.2 in The TeXbook.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

Runaway argument?
\prg_do_nothing: \cs_gset_protected_nopar:Npx }{\exp_not:c {\cs_to_str:N \ETC.
./minimal.tex:4: File ended while scanning use of \__tl_rescan:w.
<inserted text> 
\par 
l.4 \setmathfont{TeX Gyre Pagella Math}

I suspect you have forgotten a `}', causing me
to read past where you wanted me to stop.
I'll try to recover; but if the error is serious,
you'd better type `E' or `X' now and fix your file.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathover ->\
             mathover
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\mathunder ->\
              mathunder
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Undefined control sequence.
\um_set_mathsymbol:nNNn #1#2#3#4->\tl_case:Nnn 
                                               #3{\mathop {\um_set_big_opera...
l.4 \setmathfont{TeX Gyre Pagella Math}

The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Missing number, treated as zero.
<to be read again> 
{
l.4 \setmathfont{TeX Gyre Pagella Math}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

./minimal.tex:4: Undefined control sequence.
\mathbotaccent ->\
                  mathbotaccent
l.4 \setmathfont{TeX Gyre Pagella Math}

(That makes 100 errors; please try again.)

Here is how much of LuaTeX's memory you used:
 20102 strings out of 494703
 100000,552014 words of node,token memory allocated
 13580 words of node memory still in use:
   226 hlist, 1 rule, 2 math, 16 glue, 73 kern, 5 penalty, 660 noad, 24 accent, 
511 math_char, 173 sub_mlist, 744 glyph, 373 attribute, 59 glue_spec, 366 attrib
ute_list, 3 temp, 1 write, 2 local_par, 3 dir nodes
   avail lists: 1:30,2:9,3:271,4:250,6:2,7:1,10:4
 23480 multiletter control sequences out of 65536+600000
 34 fonts using 7999407 bytes
 62i,7n,60p,1210b,226s stack positions out of 5000i,500n,10000p,200000b,100000s
./minimal.tex:4:  ==> Fatal error occurred, no output PDF file produced!

[wspr]

No need to paste in the entire log file :). This is a unicode-math issue, and an update has been sent earlier today to fix the issue. Apologies for the inconvenience.

[jokuha]

No need to paste in the entire log file

Sorry, this way you got a full report;-) And, I couldn't figure out how to attach a file...