Fail2ban Radarr/Sonarr Auth

Does anyone know the regex string to create a filter for Radarr/Sonarr logs for failed Auth?

Here is an idea of the failure in the logs.

2021-10-13 06:12:35.2|Warn|Auth|Auth-Failure ip 172.241.224.15 username ‘dfdfdf’

failregex = Auth-Failure ip <HOST> username '.*'

This works for me.