System error

[AlesKO]

where can I find more info about following system error:

15:50 Error during perform command execution: Error: Invalid argument
15:50 Error during perform command execution: Error: Invalid argument
15:50 Error during perform command execution: Error: Invalid argument
15:50 Error during perform command execution: Error: Invalid argument

[PoltoS]

You should check logs to see what is around that line. /var/log/z-way-server.log