`/opt/quarto/share/filters/quarto-pre/quarto-pre.lua:3417: attempt to index a nil value (local 'f')`

[pat-s]

We're seeing the following error during CI runs on Ubuntu 20.04

https://github.com/mlr-org/mlr3book/runs/6628847525?check_suite_focus=true

Error running filter /opt/quarto/share/filters/quarto-pre/quarto-pre.lua:
/opt/quarto/share/filters/quarto-pre/quarto-pre.lua:3417: attempt to index a nil value (local 'f')
stack traceback:
	/opt/quarto/share/filters/quarto-pre/quarto-pre.lua:3381: in function </opt/quarto/share/filters/quarto-pre/quarto-pre.lua:3374>
make: *** [Makefile:32: pdf] Error 1
Error: Process completed with exit code 2.

Rendering locally using MacTex 2022 works fine.

quarto 0.9.466 in both setups. Unfortunately the CI run does not really return helpful error contents.
Any idea what we could try?

The source can be found here. Thanks for your help!

[dragonstyle]

It looks to me like it is trying to read include-in-header files - is there any reason to suspect there might be difference there between local and CI?

[pat-s]

I don't see any 🤔
Also made sure to start fresh locally without cache etc - still working locally and failing on CI.

I haven't found any way to enable enhanced logging or similar.
LMK if you have an idea how I could troubleshoot this :)

[dragonstyle]

It seems like we're having trouble reading a file. I tried to add a bit of debugging to the latest version (building now). Do you trying with the latest and perhaps we'll get a more helpful error message... (build 468 should contain debugging if we fail to read an include file properly).

[pat-s]

Nice, seems to have helped a bit!

compilation failed- error
LaTeX Error: Environment rmdnote undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1632 \begin{rmdnote}

Which is caused by the failed attempt to read preamble.tex:

FAILED TO READ FILE preamble.tex

https://github.com/mlr-org/mlr3book/runs/6635192038?check_suite_focus=true

No idea why though - do you have another idea how to move forward from here onwards?

[jjallaire]

rmdnote is specifically from bookdown (it definitely shouldn't appear in a Quarto book). preamble.tex is also typically included in bookdown books (it's to.part of the generated YAML template). Looking at your source code I see that you have an include-in-header: preamble.tex but in fact have no preamble.tex in your project.

Charles, I think we should improve our error messages (can even do on the typescript side) so that if include files don't exist a hard error occurs w/ a clear message about what's going on.

[dragonstyle]

Agree - glad you caught the missing include - I will improve the error message!

[pat-s]

@jjallaire Ahh sorry! preamble.tex exists in main and I did not specifically remove it - turns out all tex files are git-ignore'd and it somehow got removed in the new branch 🤦
Anyhow, I've removed it entirely now and the PDF builds just fine! 🎉
We'll evaluate again if we might need some parts of it or we are happy without it.

Sorry for all the trouble!

[jjallaire]

Great to hear we got to the bottom of it! Leaving the issue open pending our improving behavior around missing included files

[fabge]

I am having similiar issues when trying to render:

Error running filter /opt/quarto/share/filters/quarto-post/quarto-post.lua:
/opt/quarto/share/filters/quarto-post/quarto-post.lua:1752: attempt to index a nil value (field 'attr')
stack traceback:
	/opt/quarto/share/filters/quarto-post/quarto-post.lua:1063: in function </opt/quarto/share/filters/quarto-post/quarto-post.lua:1057>
Error: Process completed with exit code 1.

Failing pipeline
https://github.com/fabge/snippets/runs/6769585825?check_suite_focus=true

Repository
https://github.com/fabge/snippets

Thank you for your help!

[dragonstyle]

This is likely something I introduced yesterday afternoon- apologies and I’ll look at it first thing this morning!

[dragonstyle]

@fabge This should be fix now starting here 8f211f7. A fresh release is being built now and should be available shortly. If you have a moment to confirm that this fixes the issue, I would appreciate it very much.

[fabge]

@dragonstyle Like a charm! Thank you!