Login to Plesk failed - Action Helper by name Form not found

Created:

2017-01-17 17:23:28 UTC

Modified:

2017-08-08 13:46:01 UTC

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Login to Plesk failed - Action Helper by name Form not found

Symptoms

Unable to login to Plesk, the following error appears:

Action Helper by name Form not found

/var/log/plesk/panel.log file also contains the following error

[2017-01-17 10:32:59] ERR [panel] Action Helper by name Form not found:
0: /opt/psa/admin/plib/Zend/Controller/Action/HelperBroker.php:369 
Zend_Controller_Action_HelperBroker::_loadHelper(string 'Form')
1: /opt/psa/admin/plib/Zend/Controller/Action/HelperBroker.php:155
Zend_Controller_Action_HelperBroker::getStaticHelper(string 'form')
2: /opt/psa/admin/plib/Application/Web.php:90 Plesk\Application_Web->_initFrontController()
3: /opt/psa/admin/plib/Application/Web.php:26
Plesk\Application_Web->run()
4: /opt/psa/admin/htdocs/application.php:15

Cause

"Foreign" non-Plesk instance of Zend framework located in Plesk sw-engine `include_path`.

Resolution

  • Ensure that there is no /usr/local/psa/admin/plib/Zend directory
  • Delete it or move out from  /usr/local/psa/admin/plib/
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