Fatal error: Uncaught Error: Class "Sabre\HTTP\Auth\AbstractAuth" not found in /server/www/10.1.1.5/htdocs/vendor/sabre/http/lib/Auth/Basic.php:20 Stack trace: #0 {main} thrown in /server/www/10.1.1.5/htdocs/vendor/sabre/http/lib/Auth/Basic.php on line 20