Use +SymLinksIfOwnerMatch option in .htaccess for Drupal on Virtualmin

The default Drupal 8 .htaccess provides +FollowSymLinks.

There is an old discussion about that on the Virtualmin forum.

A patch is under creation for Drupal 8. It changes the Options +FollowSymLinkson the root .htaccess directory.

by

`Options +SymLinksIfOwnerMatch`

You should also change this on the sites/default/files .htaccess