Plesk is not accessible after loggin in: ERROR: require_once(): Failed opening required ‘modules/fileserver/FileServerStatus.php’

Symptoms

• Plesk shows blank page and the following error after logging in:

  ERROR: require_once(): Failed opening required 'modules/fileserver/FileServerStatus.php' (include_path='/usr/local/psa/admin/plib/vendor/plesk/zendframework/library:/usr/local/psa/admin/plib') (Network.php:44)

• Tools & Settings > License Management > Retrieve Keys results in the following error:

  ERROR: require_once(): Failed opening required 'modules/fileserver/FileServerStatus.php' (include_path='/opt/psa/admin/plib/vendor/plesk/zf1/library:/opt/psa/admin/plib') (Network.php:44)

• Records like the following can be found in the /var/log/plesk/panel.log with Plesk debugging enabled:

  DEBUG [panel] Unable to find class Modules_SocialLogin_Auth in /usr/local/psa/admin/plib/modules/social-login/library/Auth.php.
   PHP Warning: require_once(modules/fileserver/FileServerStatus.php): failed to open stream: No such file or directory; File: /usr/local/psa/admin/plib/ServerInfo/Network.php, Line: 44
   ERR [1] Exception: PHP Warning: require_once(modules/fileserver/FileServerStatus.php): failed to open stream: No such file or directory; File: /usr/local/psa/admin/plib/ServerInfo/Network.php, Line: 44
   
   file: /usr/local/psa/admin/plib/Smb/Exception/Syntax.php
   line: 56
   code: 0
   trace: #0 /usr/local/psa/admin/plib/ServerInfo/Network.php(44): Smb_Exception_Syntax::handleError(integer '2', string 'require_once(modules/fileserver/FileServerStatus.php): failed to open stream: No such file or directory', string '/usr/local/psa/admin/plib/ServerInfo/Network.php', integer '44', array)

• fileserver extension persists on the server:

  # plesk bin extension –list | grep fileserver
  fileserver – Samba Fileserver Configuration

• Plesk file server extension is marked as not installed in Plesk installer:

  

Cause

Broken fileserver package on the server.

Resolution

It is required to install Plesk File Server back in order to resolve the issue. In case it is not required, remove it afterwards.

1. Log into the server via SSH.

2. Install Plesk file server using Plesk installer:

   # plesk installer add –components psa-fileserver

Note: in order to remove it, use plesk installer remove --components psa-fileserver