\rule{\linewidth}{0.2pt} is bad

[HelloYJohn]

Step to reproduce the behavior

1. http://mathtranslate.xyz/ Arxiv ID: 2302.06873
2. result PDF generation failed. Please try on Overleaf.
3. I am not familiar with the syntax of latex, please help me solve it.
4. Minimum steps to reproduce

0-main.tex

\documentclass{article}

\begin{document}

\begingroup
\renewcommand\thefootnote{}\footnote{
\noindent
\rule{\linewidth}{0.2pt}
}\addtocounter{footnote}{-1}\endgroup

\end{document}

translate_tex 0-main.tex --debug --nocache cat 0-main.tex

\documentclass{article}
\usepackage{xeCJK}
\usepackage{amsmath}

\begin{document}

   \begingroup   
    \renewcommand       \thefootnote{}       \footnote{   \noindent   
    \rule{\linewidth}     { 0.2点   }   }       \addtocounter{footnote}     { 
-1   }     \endgroup     

\end{document}

cat text_old

Paragraph 0

Paragraph 1

Paragraph 2

 XMATHX_4 
 XMATHX_5 XMATHX_0 XMATHX_1 XMATHX_2 XMATHX_3 XMATHX_6 

Paragraph 2

-1

Paragraph 2

 XMATHX_2 
 XMATHX_0 XMATHX_1 

Paragraph 2

0.2pt

cat text_new

Paragraph 0

Paragraph 1

Paragraph 2

XMATHX_4
 XMATHX_5 XMATHX_0 XMATHX_1 XMATHX_2 XMATHX_3 XMATHX_6

Paragraph 2

-1

Paragraph 2

XMATHX_2
 XMATHX_0 XMATHX_1

Paragraph 2

0.2点

cat objs

Paragraph 0

Paragraph 1

Paragraph 2

obj 0
 \thefootnote{} 
obj 1
 \footnote{
\noindent
\rule{\linewidth}{0.2pt}
} 
obj 2
 \addtocounter{footnote} 
obj 3
 {-1} 
obj 4
 \begingroup 
obj 5
 \renewcommand 
obj 6
 \endgroup 

Paragraph 2

Paragraph 2

obj 0
 \rule{\linewidth} 
obj 1
 {0.2pt} 
obj 2
 \noindent 

Paragraph 2