Exception koi-worker

[hollis11]

Docker container restarts periodically
Message:

Traceback (most recent call last):
2023-06-22 10:54:32 File "/usr/local/bin/koi-worker", line 8, in
2023-06-22 10:54:32 sys.exit(main())
2023-06-22 10:54:32 File "/usr/local/lib/python3.8/dist-packages/koi_core/worker.py", line 207, in main
2023-06-22 10:54:32 sec_since_last_change = (datetime.utcnow() - instance.last_modified).total_seconds()
2023-06-22 10:54:32 TypeError: unsupported operand type(s) for -: 'datetime.datetime' and 'str'

[hannesrichter]

This was fixed in commit c6f3898.