Fail to build pdf with pdflatex when notebook is in a subdirectory

Describe the bug

Given the template project, when “notebooks.ipynb” is moved to a subdirectory and _toc updated accordingly, the PDF failed to build due to the output image being not found by Latex.

Latex error message:

'LaTeX Warning: File `{_build/jupyter_execute/notebooks_2_0}.png' not found on input line 385.'

Note that the output image is properly generated by the notebook, but in the proper sub-directory: _build/jupyter_execute/examples/notebooks_2_0.png

Building the HTML works as expected.

To Reproduce

• Start from the basic example jupyter-book create mynewbook/
• Move the notebooks.ipynb into a subdirectory:

cd mynewbook; mkdir examples; move notebooks.ipynb examples

• Adjust _toc accordingly:

- file: content
  sections:
    - file: markdown
    - file: examples/notebooks

• jb build --builder pdflatex newbook will trigger the error

Expected behavior

The image file path in the generate latex source files should mirror the execution structure such that the generated images are found, and the PDF should be generated w/o errors.

[jmshea]

@AakashGfude I have confirmed that my issue is different and have created a new issue that includes details and a minimal example: https://github.com/executablebooks/jupyter-book/issues/1636

[jmshea]

@AakashGfude Thanks for your help! I believe you are correct. As an experiment, I copied a few of my directories and ran with --builder pidflatex, and it didn’t give me any more errors. The Chapters were numbered incorrectly (every section labeled 0.x instead of just x), but at least I can compile. Now the problem is that it is not easy for me to flatten my hierarchy because I have multiple files with the same names in the subdirectories. But I can roll some Python to get it done until that issue is fixed.

I’ll try to find the right issue to post to.