This is what fixed it for me:
/var/www/html/admin/modules/sysadmin/hooks/fail2ban-apache-config
Found it on:
https://community.freepbx.org/t/fail2ban-wont-start-after-update/76810/52
This is what fixed it for me:
/var/www/html/admin/modules/sysadmin/hooks/fail2ban-apache-config
Found it on:
https://community.freepbx.org/t/fail2ban-wont-start-after-update/76810/52