I know this question has been asked many times before. There are many similar questions but I failed to solve mine. During compilation, I'm getting the following error message:

./thesis.tex:41: Missing = inserted for \ifnum.
<to be read again> 
./thesis.tex:41:  ==> Fatal error occurred, no output PDF file produced!

I‘m getting this error when I compile my LaTeX project like so:

latexmk -halt-on-error \
        -file-line-error \
        -no-shell-escape \
        -pdf \
        -output-directory=output \

The compilation happens inside a Docker container of Fedora 36. I‘ve installed texlive-scheme-full and latexmk. The funny thing is that line 41 within thesis.tex is an empty line.

You can find my full log message here.


1 Answer 1


The clue is

Package: biblatex DATE vVERSION programmable bibliographies (PK/MW)

which should look more like

Package: biblatex 2022/02/02 v3.17 programmable bibliographies (PK/MW)

which an actual date instead of DATE and a version number instead of VERSION.

Your biblatex.sty is faulty. This is a known packaging issue with Fedora 36 that has been reported and should have been resolved a few weeks ago. See https://github.com/plk/biblatex/issues/1218 and https://bugzilla.redhat.com/show_bug.cgi?id=2065453. Update your system thoroughly and rebuild.

  • Prior to this question, I did a docker rebuild thinking there could be something wrong with the setup. That didn't work. After your answer, I realised I forgot to relaunch my new container from that new build. My clumsiness. Thanks! Apr 7, 2022 at 14:01

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.