holoviews (fresh) jupyterlab extension problem

[stonebig]

not sure if it's me or holoviews:

• this type of example doesn't seem work (yet) in Jupyterlab:

  
  # Holoviews
  # for more example, see http://holoviews.org/Tutorials/index.html
  import numpy as np
  import holoviews as hv
  hv.extension('matplotlib')
  dots = np.linspace(-0.45, 0.45, 11)
  fractal = hv.Image(image)

layouts = {y: (fractal * hv.Points(fractal.sample([(i,y) for i in dots])) + fractal.sample(y=y) ) for y in np.linspace(0, 0.45,11)}

hv.HoloMap(layouts, kdims=['Y']).collate().cols(2)

giving:
![holoju01](https://user-images.githubusercontent.com/4312421/36755004-0ef2528c-1c0b-11e8-90ca-7ac4ab46c64f.PNG)

but the ultra-tricky one ... does ???

![holoju02](https://user-images.githubusercontent.com/4312421/36755077-4ffcda4a-1c0b-11e8-91ef-e42a4bf9b112.PNG)

[philippjfr]

Seems to work for me:

Do you see any errors on your JS developer console?

[stonebig]

as usual, node-gyp failed to provide service to me, so I may have a missing nut or bolt, looking in the console...

[stonebig]

widgets.js:57 Uncaught TypeError: y.slider is not a function
    at Object.o [as init_slider] (widgets.js:57)
    at <anonymous>:25:11
    at t.attachWidget (panellayout.js:210)
    at t.insertWidget (panellayout.js:113)
    at t._insertOutput (widget.js:331)
    at t.onModelChanged (widget.js:242)
    at m (index.js:475)
    at Object.l [as emit] (index.js:433)
    at e.emit (index.js:106)
    at e._onListChanged (model.js:294)

[stonebig]

but this error seems also to happen before holoviews cell execution. so I don't have specific message, maybe a general problem

[stonebig]

but still, I apparently have holoviews extension:

jupyter labextension list

JupyterLab v0.31.8
Known labextensions:
   app dir: C:\WinPython\bd36\buildQt5\winpython-64bit-3.6.x.0\python-3.6.4.amd64\share\jupyter\lab
@jupyter-widgets/jupyterlab-manager
        @jupyter-widgets/jupyterlab-manager v0.33.2 enabled  ok
@jupyterlab/vega3-extension
        @jupyterlab/vega3-extension v0.14.2 enabled  ok
@pyviz/jupyterlab_holoviews
        @pyviz/jupyterlab_holoviews v0.1.0 enabled  ok
bqplot
        bqplot v0.3.6 enabled  ok
jupyter-leaflet
        jupyter-leaflet v0.7.1 enabled  ok
jupyter-matplotlib
        jupyter-matplotlib v0.3.0 enabled  ok
jupyter-threejs
        jupyter-threejs v0.4.1 enabled  ok
jupyterlab_bokeh
        jupyterlab_bokeh v0.3.1 enabled  ok

[stonebig]

maybe a 3rd impartial user may help to determine which pc is not "normal". I suppose it's mine by default.

[stonebig]

same issue with the holoviews galery dragon_curve example.... maybe it's the missing bit to have in next bokeh ? stupid remark, i used also matplotlib backend.

[philippjfr]

Thanks that's helpful, the error makes it seem like jQueryUI isn't being loaded, I'll look into it.

[jlstevens]

Seems to work for me:

That said there may be some non-deterministic issue and I just got lucky.

[philippjfr]

There should be no async or non-deterministic issues since jQuery and jQueryUI should be shipped in the JupyterLab webpack bundle. Maybe a browser difference? I've only tried Chrome so far.

[philippjfr]

I've made a small change in the extension which might fix this, might be worth trying an update.

[stonebig]

Trying with @pyviz/jupyterlab_holoviews v0.2.0 ... no change.

Well, it's nevertheless a 50% success, on a jupyterlab beta1 only stack. with classic notebook still working.

History of jupyterlab install messages:

C:\WinPython\bd36\buildQt5\winpython-32bit-3.6.x.0\scripts>jupyter labextension install @pyviz/jupyterlab_holoviews
> C:\WinPython\bd36\buildQt5\winpython-32bit-3.6.x.0\python-3.6.4\..\tools\n\npm.CMD pack @pyviz/jupyterlab_holoviews
pyviz-jupyterlab_holoviews-0.2.0.tgz
> node C:\WinPython\bd36\buildQt5\winpython-32bit-3.6.x.0\python-3.6.4\lib\site-packages\jupyterlab\staging\yarn.js install
yarn install v1.3.2
info No lockfile found.
[1/4] Resolving packages...
[2/4] Fetching packages...
info fsevents@1.1.3: The platform "win32" is incompatible with this module.
info "fsevents@1.1.3" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
warning "@jupyterlab/json-extension > react-json-tree@0.10.9" has unmet peer dependency "react@^15.0.0".
warning "@jupyterlab/json-extension > react-json-tree@0.10.9" has unmet peer dependency "react-dom@^15.0.0".
warning "@jupyterlab/json-extension > react-highlighter@0.4.2" has unmet peer dependency "react@^0.14.0 || ^15.0.0 || ^16.0.0".
warning "@jupyterlab/vdom-extension > @nteract/transform-vdom@1.1.1" has unmet peer dependency "react@^15.6.1".
warning "jupyter-leaflet > leaflet.markercluster@1.3.0" has incorrect peer dependency "leaflet@~1.0.3".
[4/4] Building fresh packages...
[-/4] ⡀ waiting...
[2/4] ⡀ canvas: C:\WinPython\bd36\buildQt5\winpython-32bit-3.6.x.0\pyth
[3/4] ⡀ jupyter-matplotlib
[4/4] ⡀ canvas-prebuilt: 404 status code downloading tarball https://gi
warning Error running install script for optional dependency: "C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas-prebuilt: Command failed.\nExit code: 1\nCommand: node_modules\\.bin\\node-pre-gyp install\nArguments: \nDirectory: C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas-prebuilt\nOutput:
node-pre-gyp info it worked if it ends with ok
node-pre-gyp info using node-pre-gyp@0.6.39
node-pre-gyp info using node@6.11.5 | win32 | ia32
node-pre-gyp info check checked for \"C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas-prebuilt\\canvas\\build\\Release\\canvas-prebuilt.node\" (not found)
node-pre-gyp http GET https://github.com/chearon/node-canvas-prebuilt/releases/download/v1.6.0/canvas-prebuilt-v1.6.0-node-v48-win32-ia32.tar.gz
node-pre-gyp http 404 https://github.com/chearon/node-canvas-prebuilt/releases/download/v1.6.0/canvas-prebuilt-v1.6.0-node-v48-win32-ia32.tar.gz
node-pre-gyp ERR! install error 
node-pre-gyp ERR! stack Error: 404 status code downloading tarball https://github.com/chearon/node-canvas-prebuilt/releases/download/v1.6.0/canvas-prebuilt-v1.6.0-node-v48-win32-ia32.tar.gz
node-pre-gyp ERR! stack     at Request.<anonymous> (C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\node-pre-gyp\\lib\\install.js:118:27)
node-pre-gyp ERR! stack     at emitOne (events.js:101:20)
node-pre-gyp ERR! stack     at Request.emit (events.js:188:7)
node-pre-gyp ERR! stack     at Request.onRequestResponse (C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\node-pre-gyp\\node_modules\\request\\request.js:1074:10)
node-pre-gyp ERR! stack     at emitOne (events.js:96:13)
node-pre-gyp ERR! stack     at ClientRequest.emit (events.js:188:7)
node-pre-gyp ERR! stack     at HTTPParser.parserOnIncomingClient [as onIncoming] (_http_client.js:474:21)
node-pre-gyp ERR! stack     at HTTPParser.parserOnHeadersComplete (_http_common.js:99:23)
node-pre-gyp ERR! stack     at TLSSocket.socketOnData (_http_client.js:363:20)
node-pre-gyp ERR! stack     at emitOne (events.js:96:13)
node-pre-gyp ERR! System Windows_NT 10.0.16299
node-pre-gyp ERR! command \"C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\python-3.6.4\\\\..\\\\tools\\\\n\\\\node.exe\" \"C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\python-3.6.4\\\\share\\\\jupyter\\\\lab\\\\staging\\\\node_modules\\\\node-pre-gyp\\\\bin\\\\node-pre-gyp\" \"install\"
node-pre-gyp ERR! cwd C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas-prebuilt
node-pre-gyp ERR! node -v v6.11.5
node-pre-gyp ERR! node-pre-gyp -v v0.6.39\n[-/4] ⠠ waiting...
[2/4] ⠠ canvas: gyp
[-/4] ⠐ waiting...
[-/4] ⠐ waiting...
warning Error running install script for optional dependency: "C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas: Command failed.\nExit code: 1\nCommand: node-gyp rebuild\nArguments: \nDirectory: C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas\nOutput:\nC:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas>if not defined npm_config_node_gyp (node \"C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\tools\\n\\node_modules\\npm\\bin\\node-gyp-bin\\\\..\\..\\node_modules\\node-gyp\\bin\\node-gyp.js\" rebuild )  else (node \"\" rebuild ) \r\ngyp info it worked if it ends with ok\ngyp info using node-gyp@3.4.0\ngyp info using node@6.11.5 | win32 | ia32\ngyp http GET https://nodejs.org/download/release/v6.11.5/node-v6.11.5-headers.tar.gz\ngyp http 200 https://nodejs.org/download/release/v6.11.5/node-v6.11.5-headers.tar.gz\ngyp http GET https://nodejs.org/download/release/v6.11.5/SHASUMS256.txt\ngyp http GET https://nodejs.org/download/release/v6.11.5/win-x86/node.lib\ngyp http GET https://nodejs.org/download/release/v6.11.5/win-x64/node.lib\ngyp http 200 https://nodejs.org/download/release/v6.11.5/win-x64/node.lib\ngyp http 200 https://nodejs.org/download/release/v6.11.5/SHASUMS256.txt\ngyp http 200 https://nodejs.org/download/release/v6.11.5/win-x86/node.lib\ngyp info spawn C:\\WinPython\\basedir27\\buildZero\\winpython-32bit-2.7.x.2\\python-2.7.13\\python.exe\ngyp info spawn args [ 'C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\tools\\\\n\\\\node_modules\\\\npm\\\\node_modules\\\\node-gyp\\\\gyp\\\\gyp_main.py',\ngyp info spawn args   'binding.gyp',\ngyp info spawn args   '-f',\ngyp info spawn args   'msvs',\ngyp info spawn args   '-G',\ngyp info spawn args   'msvs_version=auto',\ngyp info spawn args   '-I',\ngyp info spawn args   'C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\python-3.6.4\\\\share\\\\jupyter\\\\lab\\\\staging\\\\node_modules\\\\canvas\\\\build\\\\config.gypi',\ngyp info spawn args   '-I',\ngyp info spawn args   'C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\tools\\\\n\\\\node_modules\\\\npm\\\\node_modules\\\\node-gyp\\\\addon.gypi',\ngyp info spawn args   '-I',\ngyp info spawn args   'C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\settings\\\\.node-gyp\\\\6.11.5\\\\include\\\\node\\\\common.gypi',\ngyp info spawn args   '-Dlibrary=shared_library',\ngyp info spawn args   '-Dvisibility=default',\ngyp info spawn args   '-Dnode_root_dir=C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\settings\\\\.node-gyp\\\\6.11.5',\ngyp info spawn args   '-Dnode_gyp_dir=C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\tools\\\\n\\\\node_modules\\\\npm\\\\node_modules\\\\node-gyp',\ngyp info spawn args   '-Dnode_lib_file=node.lib',\ngyp info spawn args   '-Dmodule_root_dir=C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\python-3.6.4\\\\share\\\\jupyter\\\\lab\\\\staging\\\\node_modules\\\\canvas',\ngyp info spawn args   '--depth=.',\ngyp info spawn args   '--no-parallel',\ngyp info spawn args   '--generator-output',\ngyp info spawn args   'C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\python-3.6.4\\\\share\\\\jupyter\\\\lab\\\\staging\\\\node_modules\\\\canvas\\\\build',\ngyp info spawn args   '-Goutput_dir=.' ]\nWarning: Missing input files:\r\nC:\\GTK\\bin\\zlib1.dll\r\nC:\\GTK\\bin\\libexpat-1.dll\r\nC:\\GTK\\bin\\libpng14-14.dll\r\nC:\\GTK\\bin\\libcairo-2.dll\r\nC:\\GTK\\bin\\libfontconfig-1.dll\r\nC:\\GTK\\bin\\libfreetype-6.dll\r\ngyp info spawn C:\\Program Files (x86)\\MSBuild\\14.0\\bin\\msbuild.exe\ngyp info spawn args [ 'build/binding.sln',\ngyp info spawn args   '/clp:Verbosity=minimal',\ngyp info spawn args   '/nologo',\ngyp info spawn args   '/p:Configuration=Release;Platform=Win32' ]\nG�n�ration des projets individuellement dans cette solution. Pour activer la g�n�ration en parall�le, ajoutez le commutateur \"/m\".\r\nMSBUILD : error MSB3428: Impossible de charger le composant Visual�C++ \"VCBuild.exe\". Pour corriger le probl�me, vous devez 1) installer le Kit de d�veloppement .NET Framework�2.0�SDK, 2) installer Microsoft Visual Studio�2005 ou 3) ajouter l'emplacement du composant au chemin d'acc�s syst�me, s'il est install� ailleurs.  [C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\python-3.6.4\\share\\jupyter\\lab\\staging\\node_modules\\canvas\\build\\binding.sln]\r\ngyp ERR! build error \ngyp ERR! stack Error: `C:\\Program Files (x86)\\MSBuild\\14.0\\bin\\msbuild.exe` failed with exit code: 1\ngyp ERR! stack     at ChildProcess.onExit (C:\\WinPython\\bd36\\buildQt5\\winpython-32bit-3.6.x.0\\tools\\n\\node_modules\\npm\\node_modules\\node-gyp\\lib\\build.js:276:23)\ngyp ERR! stack     at emitTwo (events.js:106:13)\ngyp ERR! stack     at ChildProcess.emit (events.js:191:7)\ngyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:219:12)\ngyp ERR! System Windows_NT 10.0.16299\ngyp ERR! command \"C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\python-3.6.4\\\\..\\\\tools\\\\n\\\\node.exe\" \"C:\\\\WinPython\\\\bd36\\\\buildQt5\\\\winpython-32bit-3.6.x.0\\\\tools\\\\n\\\\node_modules\\\\npm\\\\node_modules\\\\node-gyp\\\\bin\\\\node-gyp.js\" \"rebuild\"\ngyp ERR! cwd C:\\WinPython\\bd36\\busuccess Saved lockfile.
Done in 590.91s.
> node C:\WinPython\bd36\buildQt5\winpython-32bit-3.6.x.0\python-3.6.4\lib\site-packages\jupyterlab\staging\yarn.js run build:prod
yarn run v1.3.2
$ webpack --config webpack.prod.config.js

js console errors

widgets.js:57 Uncaught TypeError: y.slider is not a function
    at Object.o [as init_slider] (widgets.js:57)
    at <anonymous>:25:11
    at t.attachWidget (panellayout.js:210)
    at t.insertWidget (panellayout.js:113)
    at t._insertOutput (widget.js:331)
    at t.onModelChanged (widget.js:242)
    at m (index.js:475)
    at Object.l [as emit] (index.js:433)
    at e.emit (index.js:106)
    at e._onListChanged (model.js:294)
2widgets.js:57 Uncaught TypeError: y.slider is not a function
    at Object.o [as init_slider] (widgets.js:57)
    at <anonymous>:25:11
    at t.attachWidget (panellayout.js:210)
    at t.insertWidget (panellayout.js:113)
    at t._insertOutput (widget.js:331)
    at t.onModelChanged (widget.js:242)
    at m (index.js:475)
    at Object.l [as emit] (index.js:433)
    at e.emit (index.js:106)
    at e._onListChanged (model.js:294)
o @ widgets.js:57
(anonymous) @ VM189:25
t.attachWidget @ panellayout.js:210
t.insertWidget @ panellayout.js:113
t._insertOutput @ widget.js:331
t.onModelChanged @ widget.js:242
m @ index.js:475
l @ index.js:433
e.emit @ index.js:106
e._onListChanged @ model.js:294
m @ index.js:475
l @ index.js:433
e.emit @ index.js:106
e.push @ observablelist.js:153
e._add @ model.js:230
e.add @ model.js:159
r._onIOPub @ widget.js:107
t._handleIOPub @ future.js:198
t.handleMsg @ future.js:171
_onWSMessage @ default.js:120

[stonebig]

retrying on notebook after lab failure, holoviews works, but everything looks curiously "doubled" (not only holoviews):

so it may be a JS/jupyter at large issue, a white clean approach may be needed at each update.

[stonebig]

will retry in a few days.

[philippjfr]

Thanks for trying again, I can't reproduce any of the issues you seem to be encountering and seemingly neither can @jlstevens. I'll try to get a few other people to try it.

[philippjfr]

but everything looks curiously "doubled"

I actually remember encountering this before, but the issue always went away when I reloaded the page.

[ea42gh]

tried it too: worked for both matplotlib and bokeh.

[stonebig]

After a big rebuild + switch to nodejs-8/npm-5.6, it works. Awesome!

[stonebig]

and now it doesn't work again on the 32bit version.... there is some hidden bad tricks in this javascript stack, or JupyterLab, that don't play well with my test case.

[philippjfr]

Your browser version would be very helpful.

[stonebig]

chrome 64.0.3282.186 (Build officiel) (64 bits)

[philippjfr]

Thanks, really hoped that'd be it, I've got a very similar build: Version 64.0.3282.167 (Official Build) (64-bit)

[stonebig]

I think I read Jupyterlab tries to preserve a previous state of notebooks, so playing between mutiple versions, I may fall into some un-supported scenario.

[philippjfr]

What it could be is some other extension that adds a global jQuery.

[stonebig]

the yesterday 64 bit version still works.

[philippjfr]

Going to reopen as @stonebig is still reporting this issue, and I'm now able to reproduce it on http://pangeo.pydata.org/.

[stonebig]

did you make any progress on understanding what can cause this ?

[philippjfr]

Haven't had time to investigate yet unfortunately.

[philippjfr]

@stonebig Would you mind trying the latest version of the JupyterLab extension? As before you should be able to get it with:

jupyter labextension install @pyviz/jupyterlab_holoviews

[stonebig]

no need to do an uninstall before ? so:

• last try was @pyviz/jupyterlab_holoviews v0.2.1
• now trying @pyviz/jupyterlab_holoviews v0.2.2 ...

[philippjfr]

That's right, hope you don't mind but I still don't have a good way to reproduce it in an environment I can directly modify. If this doesn't work I may have to ask you again.

[stonebig]

well, no apparent effect:

[stonebig]

I see things, but not sure it's related:

widgets.js:61 Uncaught TypeError: x.slider is not a function
    at Object.i [as init_slider] (widgets.js:61)
    at <anonymous>:25:11
    at t.attachWidget (panellayout.js:210)
    at t.insertWidget (panellayout.js:113)
    at t._insertOutput (widget.js:331)
    at t.onModelChanged (widget.js:242)
    at m (index.js:475)
    at Object.l [as emit] (index.js:433)
    at e.emit (index.js:106)
    at e._onListChanged (model.js:300)

[philippjfr]

Damn, really hoped that would fix it. Could you try the JS console and see if HoloViews.jQuery.ui is defined?

[stonebig]

well, how do I see that ? I'm not experienced in javascript things

[philippjfr]

In Chrome at least:

[stonebig]

anoher issue on altair was just caused per adblock. could it be the problem ?

[philippjfr]

Don't think so, I think it's because jQuery.ui is not defined for whatever reason, but it would be great if you could confirm.

[stonebig]

didn't see it, just relaunching jlab to get a clearer view

[stonebig]

there is a:

VM79:100 Jupyter notebooks comms not available. push_notebook() will not function. If running JupyterLab ensure the latest jupyterlab_bokeh extension is installed. In an exported notebook this warning is expected.
r @ VM79:100

but I have the extension. I'm on bokeh (0.12.15.dev2)

[philippjfr]

VM79:100 Jupyter notebooks comms not available. push_notebook() will not function. If running JupyterLab ensure the latest jupyterlab_bokeh extension is installed. In an exported notebook this warning is expected. r @ VM79:100

That is expected.

[stonebig]

all list:

Bokeh: BokehJS plotting callback run at Fri Mar 16 2018 20:35:31 GMT+0100 (Paris, Madrid)
VM79:100 [bokeh] setting log level to: 'info'
VM79:376 Bokeh: injecting raw CSS
VM79:378 Bokeh: injecting raw CSS
VM79:380 Bokeh: injecting raw CSS
VM79:60 Bokeh: all callbacks have finished
VM79:100 Jupyter notebooks comms not available. push_notebook() will not function. If running JupyterLab ensure the latest jupyterlab_bokeh extension is installed. In an exported notebook this warning is expected.
r @ VM79:100
renderer.js:88 Kernel not found, could not connect to comm target  e91b55c1d6f641399f4e51fc73decc3f
VM79:100 [bokeh] document idle at 214 ms
renderer.js:81 Kernel not found, could not register comm target  8c44293ec2d54a7bb64116e281b4895d
index.js:78 Object
index.js:78 Object
3default.js:49 Starting WebSocket: ws://localhost:8888/api/kernels/da7c95ec-b4d3-4e22-ab87-6152cc06d54c
3default.js:1395 Kernel: connected (da7c95ec-b4d3-4e22-ab87-6152cc06d54c)
future.js:155 Uncaught (in promise) Error: Canceled
    at t.dispose (future.js:155)
    at default.js:385
    at Map.forEach (<anonymous>)
    at e.dispose (default.js:384)
    at e.dispose (default.js:244)
    at index.js:241
    at <anonymous>
index.js:186 Uncaught (in promise) TypeError: Invalid value used as weak map key
    at WeakMap.set (<anonymous>)
    at Object.t [as ensureMap] (index.js:186)
    at e.get (index.js:50)
    at t.isSelectedOrActive (widget.js:772)
    at actions.js:772
    at Object.i [as each] (iter.js:60)
    at Object.D [as clearOutputs] (actions.js:770)
    at Object.clearCurrent (index.js:1293)
    at index.js:415
    at e.execute (index.js:350)
2widgets.js:61 Uncaught TypeError: x.slider is not a function
    at Object.i [as init_slider] (widgets.js:61)
    at <anonymous>:25:11
    at t.attachWidget (panellayout.js:210)
    at t.insertWidget (panellayout.js:113)
    at t._insertOutput (widget.js:331)
    at t.onModelChanged (widget.js:242)
    at m (index.js:475)
    at Object.l [as emit] (index.js:433)
    at e.emit (index.js:106)
    at e._onListChanged (model.js:300)
i @ widgets.js:61
(anonymous) @ VM179:25
t.attachWidget @ panellayout.js:210
t.insertWidget @ panellayout.js:113
t._insertOutput @ widget.js:331
t.onModelChanged @ widget.js:242
m @ index.js:475
l @ index.js:433
e.emit @ index.js:106
e._onListChanged @ model.js:300
m @ index.js:475
l @ index.js:433
e.emit @ index.js:106
e.push @ observablelist.js:153
e._add @ model.js:230
e.add @ model.js:159
r._onIOPub @ widget.js:107
t._handleIOPub @ future.js:198
t.handleMsg @ future.js:171
_onWSMessage @ default.js:120

[philippjfr]

Could you try typing HoloViews.jQuery.ui in the console and see if that's defined?

[stonebig]

HoloViews.jQuery.ui
undefined

[stonebig]

!jupyter labextension list
JupyterLab v0.31.12
Known labextensions:
   app dir: C:\WinP\bd36\buQt5\winp64-3.6.x.0\python-3.6.4.amd64\share\jupyter\lab
@jupyter-widgets/jupyterlab-manager
        @jupyter-widgets/jupyterlab-manager v0.33.2 enabled  ok
@jupyterlab/vega3-extension
        @jupyterlab/vega3-extension v0.14.4 enabled  ok
@pyviz/jupyterlab_holoviews
        @pyviz/jupyterlab_holoviews v0.2.2 enabled  ok
bqplot
        bqplot v0.3.6 enabled  ok
jupyter-leaflet
        jupyter-leaflet v0.7.1 enabled  ok
jupyter-matplotlib
        jupyter-matplotlib v0.3.0 enabled  ok
jupyter-threejs
        jupyter-threejs v0.4.1 enabled  ok
jupyterlab-datawidgets
        jupyterlab-datawidgets v5.0.1 enabled  ok
jupyterlab_bokeh
        jupyterlab_bokeh v0.4.0 enabled  ok

[philippjfr]

Okay, great thanks, no clue why that's the case on your system but not mine but at least that's a hint.

[philippjfr]

That's list of extensions is helpful too in case they are somehow interfering with each other.

[stonebig]

trying on "edge"... same result. welll, that will be all for today for me. thanks for having tried to resolve this .

[philippjfr]

Thanks a lot for trying. Hopefully I can somehow put together an environment to reproduce it for myself.

[philippjfr]

Great news, after updating to bleeding edge JupyterLab I can now reproduce the issue.