Return code '255' when indexing

[MystikReasons]

I just downloaded Sourcetrail today to in order to diagnose a python project.
Unfortunately I always get the error :
command "/opt/sourcetrail/bin//../share/data/python/SourcetrailPythonIndexer index --source-file-path /home/jgw/Documents/01_Projects/WLT/Test/WaferDataCopy.py --database-file-path /home/jgw/Documents/01_Projects/WLT/Test/Test.srctrldb_tmp" returned code "255".

I tried the 2021.1.30 and the new 2021.4.19 version
We are using CentOs 7 in the company.

I attached the log which has been generated.
Does someone know why it wont work for me?

log_2021-11-30_15-03-37.txt