Symptom:

After logging into your control panel account, you see the following error (or similar).

WEB_Server_package parameter not defined in features list.

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0: /usr/local/psa/admin/plib/class.WebServerManager.php:2 psaerror(string "WEB_Server_package parameter not defined in features list.") 1: /usr/local/psa/admin/plib/class.ServiceControl.php:2 webservermanager->getwebserverpackage() 2: /usr/local/psa/admin/plib/class.ServiceControl.php:2 servicecontrol->chkserviceobjects(string "web") 3: /usr/local/psa/admin/plib/class.Components.php:2 servicecontrol->getservicepackage(string "web") 4: /usr/local/psa/admin/plib/class.Components.php:2 components->getcomponetslist() 5: /usr/local/psa/admin/htdocs/login_up.php3:2 components->componentupdate()

 

Resolution:

This error is caused by a problem on the server-side of the control panel.  Please submit a support request.