All websites show default Plesk page instead of its content

Symptoms

• All websites show default Plesk page instead of its content.
• One or all of the following directories are empty:
  

  # ls -la /etc/httpd/conf/plesk.conf.d/forwarding
  drwxr-xr-x 2 root root 4096 .
  drwxr-xr-x 7 root root 4096 ..

  # ls -la /etc/httpd/conf/plesk.conf.d/ip_default
  drwxr-xr-x 2 root root 4096 .
  drwxr-xr-x 7 root root 4096 ..

  # ls -la /etc/httpd/conf/plesk.conf.d/vhosts
  drwxr-xr-x 2 root root 4096 .
  drwxr-xr-x 7 root root 4096 ..

  # ls -la /etc/httpd/conf/plesk.conf.d/wildcards
  drwxr-xr-x 2 root root 4096 .
  drwxr-xr-x 7 root root 4096 ..

Cause

Missing symbolic links in Apache configuration directories.

Resolution

1. Connect to the server using SSH.
2. Rebuild web server configuration files:

   # plesk repair web -domains-only