Install mqttwarn 0.23.1: TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType

Using standard install of mqttwarn on debian 10. Did update as imagebash64 via pushover gave error messages. Update now gives error: both on debian 10 install as well as on docker.

Error:

Traceback (most recent call last):
  File "/usr/local/bin/mqttwarn", line 8, in <module>
    sys.exit(run())
  File "/usr/local/lib/python3.9/site-packages/mqttwarn/commands.py", line 76, in run
    run_mqttwarn()
  File "/usr/local/lib/python3.9/site-packages/mqttwarn/commands.py", line 98, in run_mqttwarn
    config = load_configuration(name=scriptname)
  File "/usr/local/lib/python3.9/site-packages/mqttwarn/configuration.py", line 191, in load_configuration
    return Config(configfile, defaults=defaults)
  File "/usr/local/lib/python3.9/site-packages/mqttwarn/configuration.py", line 88, in __init__
    if os.path.isfile(self.functions):
  File "/usr/local/lib/python3.9/genericpath.py", line 30, in isfile
    st = os.stat(path)
TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType

[aerrow5]

Apologize for not being complete. It was indeed the solution:

; logging
logformat = '%(asctime)-15s %(levelname)-5s [%(module)s] %(message)s'
logfile   = '/var/log/mqttwarn/mqttwarn.log'

; one of: CRITICAL, DEBUG, ERROR, INFO, WARN
loglevel  = DEBUG

; path to file containing self-defined functions for formatmap and datamap
; functions = 'samplefuncs.py'

; name the service providers you will be using.
launch    = file, log, pushover

I disabled the functions resulting in an error. In the older version (April '21) it worked, that’s why I expected another issue. Thanks a lot for the input.

[amotl]

In the older version (April '21) it worked.

Thanks a stack for your report, leading to the mitigation of this regression.