无法通过Jupyter Notebook将多个图像转换为PDF

Question

我正在尝试将Jupyter Notebook .ipynb文件保存为PDF，现在我已经下载了LaTex，但它只允许一个图像。

例如，如果我包含我的第一张图像

![Neural Net](image1.jpeg "Neural Network")

没问题。

但是如果我在不同的单元格中包含两个图像（或者像下面那样包含相同的单元格）

![Neural Net](image1.jpeg "Neural Network")


![I/O Matrix](image2.jpeg "Input/Output Matrix")

我收到以下错误

    Jupyter Notebook
500 : Internal Server Error
The error was:

nbconvert failed: PDF creating failed, captured latex output:
This is XeTeX, Version 3.14159265-2.6-0.99999 (TeX Live 2018) (preloaded format=xelatex)
 restricted \write18 enabled.
entering extended mode
(./notebook.tex
LaTeX2e <2018-04-01> patch level 2
Babel <3.18> and hyphenation patterns for 84 language(s) loaded.
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/article.cls
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/size11.clo))
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/fontenc.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/t1enc.def)
(/usr/local/texlive/2018/texmf-dist/tex/latex/lm/t1lmr.fd))
(/usr/local/texlive/2018/texmf-dist/tex/latex/psnfss/mathpazo.sty)
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics/graphicx.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics/graphics.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics/trig.sty)
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics-cfg/graphics.cfg)
(/usr/local/texlive/2018/texmf-dist/tex/latex/graphics-def/xetex.def)))
(/usr/local/texlive/2018/texmf-dist/tex/latex/caption/caption.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/caption/caption3.sty))
(/usr/local/texlive/2018/texmf-dist/tex/latex/adjustbox/adjustbox.sty
(/usr/local/texlive/2018/texmf-dist/tex/latex/xkeyval/xkeyval.sty
(/usr/local/texlive/2018/texmf-dist/tex/generic/xkeyval/xkeyval.tex
(/usr/local/texlive/2018/texmf-dist/tex/generic/xkeyval/xkvutils.tex)))
(/usr/local/texlive/2018/texmf-dist/tex/latex/adjustbox/adjcalc.sty)
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(/usr/local/texlive/2018/texmf-dist/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
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(/usr/local/texlive/2018/texmf-dist/tex/latex/ucs/data/uni-global.def))
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/inputenc.sty

Package inputenc Warning: inputenc package ignored with utf8 based engines.

) (/usr/local/texlive/2018/texmf-dist/tex/latex/fancyvrb/fancyvrb.sty
Style option: `fancyvrb' v2.7a, with DG/SPQR fixes, and firstline=lastline fix 
<2008/02/07> (tvz))
(/usr/local/texlive/2018/texmf-dist/tex/latex/oberdiek/grffile.sty
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(/usr/local/texlive/2018/texmf-dist/tex/generic/oberdiek/ifluatex.sty))))
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(/usr/local/texlive/2018/texmf-dist/tex/latex/enumitem/enumitem.sty)
(/usr/local/texlive/2018/texmf-dist/tex/generic/ulem/ulem.sty)
No file notebook.aux.
(/usr/local/texlive/2018/texmf-dist/tex/latex/base/ts1cmr.fd)
(/usr/local/texlive/2018/texmf-dist/tex/latex/psnfss/t1ppl.fd)
(/usr/local/texlive/2018/texmf-dist/tex/latex/caption/ltcaption.sty)
*geometry* driver: auto-detecting
*geometry* detected driver: xetex
*geometry* verbose mode - [ preamble ] result:
* driver: xetex
* paper: <default>
* layout: <same size as paper>
* layoutoffset:(h,v)=(0.0pt,0.0pt)
* modes: 
* h-part:(L,W,R)=(72.26999pt, 469.75502pt, 72.26999pt)
* v-part:(T,H,B)=(72.26999pt, 650.43001pt, 72.26999pt)
* \paperwidth=614.295pt
* \paperheight=794.96999pt
* \textwidth=469.75502pt
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* \oddsidemargin=0.0pt
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* \voffset=0.0pt
* \mag=1000
* \@twocolumnfalse
* \@twosidefalse
* \@mparswitchfalse
* \@reversemarginfalse
* (1in=72.27pt=25.4mm, 1cm=28.453pt)

(/usr/local/texlive/2018/texmf-dist/tex/latex/ucs/ucsencs.def)
(/usr/local/texlive/2018/texmf-dist/tex/latex/hyperref/nameref.sty
(/usr/local/texlive/2018/texmf-dist/tex/generic/oberdiek/gettitlestring.sty))

Package hyperref Warning: Rerun to get /PageLabels entry.

(/usr/local/texlive/2018/texmf-dist/tex/latex/psnfss/ot1ppl.fd)
(/usr/local/texlive/2018/texmf-dist/tex/latex/psnfss/omlzplm.fd)
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(/usr/local/texlive/2018/texmf-dist/tex/latex/psnfss/ot1zplm.fd)

LaTeX Warning: No \author given.


LaTeX Warning: File `net.jpeg' not found on input line 303.

! Unable to load picture or PDF file 'image2.jpeg'.
<to be read again> 
                   }
l.303 ...phics{image1.jpeg} \includegraphics{image2.jpeg}

? 
! Emergency stop.
<to be read again> 
                   }
l.303 ...phics{NN.jpeg} \includegraphics{net.jpeg}

No pages of output.
Transcript written on notebook.log.

我尝试更改文件位置，使所有文件的扩展名相同，png或jpeg的效果相同。