I'm running Fail2Ban 0.10.1 on FreeBSD 11.1-RELEASE with Nginx running inside a jail. I have Fail2Ban check the Nginx error log file for suspicious activity but the Fail2Ban log file shows a message saying it can't parse some of the lines in the Nginx log file because they're not encoded correctly. This is the type of message I'm getting: WARNING Error decoding line from 'var/log/nginx/erroby larynx - Other discussion