nbconvert export to pdf fails

[Michael Gilbert]

I've been trying to get the "download as --> pdf" feature to work on jupyterhub but I keep running into a 500 internal server error saying "nbconvert failed: PDF creation failed".

I have done the following from the command line outside of jupyterhub:

`ipython nbconvert --to=pdf test.ipynb` 

and it creates the pdf successfully. It's only when I try to do so from the web interface that it runs into issues. Here's what I get back in the log:

/miniconda3/lib/python3.4/site-packages/nbconvert/utils/pandoc.py:49: RuntimeWarning: You are using an old version of pandoc (1.9.4.1)

Recommended version is 1.12.1.

Try updating.http://johnmacfarlane.net/pandoc/installing.html.

Continuing with doubts...

  check_pandoc_version()

/miniconda3/lib/python3.4/site-packages/nbconvert/utils/pandoc.py:49: RuntimeWarning: You are using an old version of pandoc (1.9.4.1)

Recommended version is 1.12.1.

Try updating.http://johnmacfarlane.net/pandoc/installing.html.

Continuing with doubts...

  check_pandoc_version()

/miniconda3/lib/python3.4/site-packages/nbconvert/utils/pandoc.py:49: RuntimeWarning: You are using an old version of pandoc (1.9.4.1)

Recommended version is 1.12.1.

Try updating.http://johnmacfarlane.net/pandoc/installing.html.

Continuing with doubts...

  check_pandoc_version()

/miniconda3/lib/python3.4/site-packages/nbconvert/utils/pandoc.py:49: RuntimeWarning: You are using an old version of pandoc (1.9.4.1)

Recommended version is 1.12.1.

Try updating.http://johnmacfarlane.net/pandoc/installing.html.

Continuing with doubts...

  check_pandoc_version()

[I 2015-12-09 12:49:18.026 billy files:127] Writing 13607 bytes to notebook.tex

[I 2015-12-09 12:49:18.028 billy pdf:143] Building PDF

[I 2015-12-09 12:49:18.029 billy pdf:77] Running pdflatex 3 times: ['pdflatex', 'notebook.tex']

[C 2015-12-09 12:49:18.112 billy pdf:104] pdflatex failed: ['pdflatex', 'notebook.tex']

    This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)

     %&-line parsing enabled.

    ---! /packages/texlive/texmf-var/web2c/pdftex/pdflatex.fmt doesn't match pdftex.pool

    (Fatal format file error; I'm stymied)

[I 2015-12-09 12:49:18.118 billy pdf:77] Running bibtex 1 time: ['bibtex', 'notebook']

[W 2015-12-09 12:49:18.146 billy pdf:115] bibtex had problems, most likely because there were no citations

[D 2015-12-09 12:49:18.149 billy pdf:116] bibtex output: ['bibtex', 'notebook']

    I couldn't open file name `notebook.aux'

[I 2015-12-09 12:49:18.151 billy pdf:77] Running pdflatex 3 times: ['pdflatex', 'notebook.tex']

[C 2015-12-09 12:49:18.225 billy pdf:104] pdflatex failed: ['pdflatex', 'notebook.tex']

    This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)

     %&-line parsing enabled.

    ---! /packages/texlive/texmf-var/web2c/pdftex/pdflatex.fmt doesn't match pdftex.pool

    (Fatal format file error; I'm stymied)

Anybody have any ideas?

Thanks,

Mike

[MinRK]

If it works on the command-line but not in the notebook, this is typically a PATH issue, perhaps finding different pdflatex or pandoc versions. Can you tell if that might be the case?

-MinRK

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