Fatal error: Uncaught Error: Class "Sabre\DAV\Node" not found in /server/www/10.1.1.5/htdocs/vendor/sabre/dav/lib/DAVACL/Principal.php:25 Stack trace: #0 {main} thrown in /server/www/10.1.1.5/htdocs/vendor/sabre/dav/lib/DAVACL/Principal.php on line 25