openfoam submitter -nn flag not working

Traceback (most recent call last):
  File "/home/pool/poweruserhpc/01-run/submitscripts/scripts/sub_openfoam.py", line 20, in <module>
    foam_sub = FoamSub(get_foam_parser().parse_args(namespace=FoamJob()))
  File "/home/pool/poweruserhpc/01-run/submitscripts/pyslurm/simsub/openfoam.py", line 41, in __init__
    if self.job.decompose and self.job.cores > 1:
TypeError: '>' not supported between instances of 'NoneType' and 'int'