A my bot on wmftools falls with follows exception. Since this commit March 9, I think.
Traceback (most recent call last):
File "/data/project/shared/pywikipedia/core/pwb.py", line 368, in <module>
if not main():
File "/data/project/shared/pywikipedia/core/pwb.py", line 362, in main
[Path(relative_filename).stem] + argvu[1:],
UnboundLocalError: local variable 'relative_filename' referenced before assignment
CRITICAL: Exiting due to uncaught exception <class 'UnboundLocalError'>