Unable to open Plesk File Manager for a domain: Symlinks out of webspace are prohibited /: Access to realpath denied

Symptoms

• Opening Domains > example.com > File Manager fails with a warning:

  Symlinks out of webspace are prohibited /: Access to realpath denied: /var/www/vhosts/example.com/ to /var/www/vhosts/example.com.

•  The domain's homedir is moved to another drive and its location is replaced with symlink.

Cause

Symbolic links to outside of webspace are not opened in Plesk File Manager. This is done due to security reasons.

Resolution

As a workaround, mount another disk directly in /var/www/vhosts/example.com/.

Note: This is an administrative task and should be performed by the system administrator or server owner.