The Apache configs cannot be created on the server with Plesk: Template_Exception: Call to a member function configuration() on null

Symptoms

• After a failed system package update, the following error message is shown in Plesk:

  PLESK_ERROR: New configuration files for the Apache web server were not created due to the errors in configuration templates: Template processing failed: file =/opt/psa/admin/conf/templates/default/nginxDomainVhostIpDefault.php, error = Template_Exception: Call to a member function configuration() on null

• The following entries are found in /var/log/panel.log:

  CONFIG_TEXT: ERR [panel] Call to a member function configuration() on null
  ERR [panel] New configuration files for the Apache web server were not created due to the errors in configuration templates: Template processing failed: file =/opt/psa/admin/conf/templates/default/nginxDomainVhostIpDefault.php, error = Template_Exception: Call to a member function configuration() on null
  file: /opt/psa/admin/plib/Template/Processor.php
  line: 28
  code: 0
  Previous error: Error: Call to a member function configuration() on null
  file: /opt/psa/admin/plib/Template/Variable/Server/WebServer.php
  line: 172

Cause

The cause of the issue is not clear.

Resolution

1. Connect to the server via SSH

2. Reinstall Plesk microupdates:

   # plesk installer update --repatch