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Article ID: 129485, created on Sep 22, 2016, last review on Sep 22, 2016

  • Applies to:
  • Plesk Automation 11.5


  1. I am getting An unforeseen error occurred message when trying to access any tab from Plesk Automation Control Panel.

  2. The following errors appear in /var/log/poa.debug.log:

    Connection problem: The requested URL returned error: 502
  3. In /usr/local/psa/admin/logs/panel.log (on PA Management node) with DEBUG enabled:

    ERR (3)  [panel]: The unexpected HTTP code '502' was received on the HTTP request to the agent at ''.


502 Bad Gateway error indicates that the issue is caused by a connectivity issue between Management Node and the Service Node with IP


Restart the pem service on the Service Node (

# service pem restart

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