12.02.17 19:44:27.502  MAIN        ( PROCESS ) : SessionClient(0x405a750): _authenticated: success=True  status=200  message=None
12.02.17 19:48:57.547  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:48818) response status code: 503
12.02.17 19:48:57.547  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:48818) response message: The connection to the Univention Management Console Server broke up unexpectedly. 
If you have root permissions on the system you can restart UMC by executing the following commands:
 * invoke-rc.d univention-management-console-server restart
 * invoke-rc.d univention-management-console-web-server restart
Otherwise please contact an administrator or try again later.
12.02.17 19:48:57.547  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:48818) response result: None
12.02.17 19:48:57.548  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:49804) response status code: 503
12.02.17 19:48:57.549  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:49804) response message: The connection to the Univention Management Console Server broke up unexpectedly. 
If you have root permissions on the system you can restart UMC by executing the following commands:
 * invoke-rc.d univention-management-console-server restart
 * invoke-rc.d univention-management-console-web-server restart
Otherwise please contact an administrator or try again later.
12.02.17 19:48:57.549  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:49804) response result: None
12.02.17 19:48:59.642  MAIN        ( PROCESS ) : UMCP_Dispatcher: check_queue: invalid session: sessionid='6c3c9938-243b-41c6-b9fb-f5e0a633ccd0'
12.02.17 19:48:59.642  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:49808) response status code: 401
12.02.17 19:48:59.643  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:49808) response message: None
12.02.17 19:48:59.643  MAIN        ( PROCESS ) : CPCommand (77.21.40.216:49808) response result: None