fail2ban fails to enable new jails

[H9k]

Running Debian 7.9 and Plesk 12.5 update 1.
I want to enable plesk-wordpress and plesk-modsecurity, but it fails:

Unable to switch on the selected jails: f2bmng failed: ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR NOK: ("invalid literal for int() with base 10: 'INFO'",)
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR NOK: (2, 'No such file or directory')
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
...
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR:f2bmng:Command '['/usr/bin/fail2ban-client', 'reload', 'plesk-modsecurity']' returned non-zero exit status 255
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR NOK: ("invalid literal for int() with base 10: 'INFO'",)
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR NOK: (2, 'No such file or directory')
...
ERROR NOK: (2, 'No such file or directory')
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
...
ERROR NOK: ('Invalid command (no set action or not yet implemented)',)
ERROR:f2bmng:Command '['/usr/bin/fail2ban-client', 'reload', 'plesk-wordpress']' returned non-zero exit status 255
ERROR:f2bmng:Failed to reload following jails due to errors in configuration: plesk-modsecurity, plesk-wordpress

 

[H9k]

Hmmm maybe the reason was I already had my own jail named "wordpress".
I removed it, and now I was able to enable the jails properly.