Sorry for the late reply.
I did update the workflow to the latest version + re-installed latex several times to no avail.
That said, I had to run the workflow in a conda environment with python version 3.6 and not 3.7.
The reason for that is elaborated in the following post:
https://forum.biobakery.org/t/which-version-of-pweave-needed/1000/4?u=hilasha2
(I should have most probably looked at pweave version 0.25, but didn’t for some reason -
https://github.com/mpastell/Pweave/compare/v0.25…v0.30.1 )