crash octprint, force it to safe mode

[vivienperiers]

hi each time i start the system with the plugin it craches, in le logs I have : File "/home/pi/oprint/lib/python3.7/site-packages/octoprint_filamentsensorsimplified/init.py", line 69, in setting_cmd_action return int(self._settings.get(["cmd_action"])) ValueError: invalid literal for int() with base 10: 'opnative'