Cause: Command execution failed on the local server with non-zero exit code - plesk

Question

Failed to fetch information from target servers
Cause: Command execution failed on the local server with non-zero exit code.
command: /usr/local/psa/bin/ipmanage --xml-info
exit code: 255
stdout: <ipinfo>
<ip name="193.160.214.57">
<state>0</state>
<type>shared</type>
<ip_address>193.160.214.57</ip_address>
<mask>255.255.255.255</mask>
<iface>venet0</iface>
<clients>0</clients>
<hostings>0</hostings>
<ftps>false</ftps>
<publicIp></publicIp>
</ip>
</ipinfo>
stderr: [2019-10-20 21:21:51.133] ERR [util_exec] proc_close() failed ['/usr/local/psa/admin/bin/f2bmng' '--reload'] with exit code [1]
PHP Fatal error: Uncaught PleskUtilException: f2bmng failed: 2019-10-20 21:21:51,115 fail2ban.jailreader [17670]: ERROR No file(s) found for glob /var/log/secure
2019-10-20 21:21:51,115 fail2ban [17670]: ERROR Failed during configuration: Have not found any log file for ssh jail
ERROR:__main__:Command '['/usr/bin/fail2ban-client', 'reload']' returned non-zero exit status 255 in /usr/local/psa/admin/plib/Service/Agent.php:210
Stack trace:
#0 /usr/local/psa/admin/plib/Ip/Ban/Manager.php(490): Service_Agent->execAndGetResponse('f2bmng', Array, '')
#1 /usr/local/psa/admin/plib/Ip/Ban/Manager.php(458): Ip_Ban_Manager->_callUtility('--reload')
#2 /usr/local/psa/admin/plib/Fail2Ban/EventListener.php(123): Ip_Ban_Manager->reload()
#3 [internal function]: Plesk\Fail2Ban\EventListener->applyChanges()
#4 {main}
thrown in /usr/local/psa/admin/plib/Service/Agent.php on line 210
That is a critical error, migration was stopped.

Answer 1

I don't know what is "wrong" with your plesk (not so familiar with), but fail2ban error is pretty simply:
ERROR No file(s) found for glob /var/log/secure
2019-10-20 21:21:51,115 fail2ban [17670]: ERROR Failed during configuration: Have not found any log file for ssh jail
Your ssh jail seems to be configured to monitor /var/log/secure which is not exist. Either you have to specify proper logpath (/var/log/auth.log?) where ssh logs authentication errors;
or if it is systemd journal on your system, you have to specify backend = systemd for that.
Related fail2ban jail.local would be:
[ssh]
# backend = systemd
logpath = /var/log/auth.log
But you can surely configure this in plesk settings too.
Also note your jail is called ssh, where normally original default jail of fail2ban is sshd (but it could be indeed configured with this name from your maintainer).