New comment by lemmi on void-packages repository

https://github.com/void-linux/void-packages/issues/25438#issuecomment-705453016

Comment:
This is the first time I see this error. I'd assume the error doesn't appear with poppler? Personally I stopped using the mupdf backend a long time ago since it had been the cause of multiple issues in the past. 
That said: If you can provide an example, maybe we can dig something up.