Unable to access File Manager for a certain domain or for all domains on a server: Permission denied

Symptoms

• Unable to access File Manager for a certain domain or for all domains on a server:

  Server Error
  500 PleskUtilException
  external error: Unable to find the directory /var/www/vhosts/example.com/: filemng failed: filemng: opendir failed: Permission denied System error 13: Permission denied

• Unable to download the files shown in File Manager:

  Forbidden
  You don't have permission to access this resource.
  Apache Server at example.com Port 443

• Unable to execute actions on File Manager: such as ZIP extraction, Copy, Rename, Changing Permissions, etc.

• Unable to connect via FTP to a domain main folder or a sub-folder with the following error:

  Unable to connect FTP :421 Service not available, remote server has closed.

• Unable to create a ZIP file in Domains > example.com > File Manager > Add to Archive:

  Unable to create the archive: filemng failed: filemng: /usr/bin/zip execution failed: zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied zip warning: Permission denied.

Cause

Incorrect permissions on domain's folder.

Resolution

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