Fatal error: Uncaught Error: Class "Sabre\VObject\Parser\Parser" not found in C:\xampp\htdocs\baikal\vendor\sabre\vobject\lib\Parser\XML.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\baikal\vendor\sabre\vobject\lib\Parser\XML.php on line 21