Strange entry in log file - NOK: ('ha',)

Hello

I keep getting a strange entry in my log file, its happening time and time again so not even a once off

2020-04-20 08:10:33 WARNING (MainThread) [homeassistant.loader] You are using a custom integration for foldingathomecontrol which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant.
NOK: (‘ha’,)
NOK: (‘ha’,)
NOK: (‘ha’,)
2020-04-20 08:13:18 WARNING (Thread-9) [pychromecast.socket_client] [Dining Room speaker:8009] Heartbeat timeout, resetting connection
2020-04-20 08:13:37 ERROR (Thread-9) [pychromecast.socket_client] [Dining Room speaker:8009] Failed to connect to service Google-Nest-Mini-27ab117c1312bfba9a49bcaff91629ec._googlecast._tcp.local., retrying in 5.0s
NOK: (‘ha’,)
NOK: (‘ha’,)
NOK: (‘ha’,)
NOK: (‘ha’,)
NOK: (‘ha’,)

I’ve tried putting the logger to debug, but it doesn’t show up when debug is on

Anyone come across this before?

Found the answer to this, it was my sensor where I was checking the currently banned HA fail2ban jail, it wasn’t set up when I changed sd card for HA so there was no value to return and for some reason was putting the output into the log file