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](https://github.com/mlr-org/mlr3book/tree/quarto). Thanks for your help!
dragonstyle
2022-05-27T17:02:26Z
pat-s
closed
`/opt/quarto/share/filters/quarto-pre/quarto-pre.lua:3417: attempt to index a nil value (local 'f')`
https://github.com/quarto-dev/quarto-cli/issues/1001