Fatal error: Uncaught Error: Class "Ramsey\Collection\Map\AbstractTypedMap" not found in C:\Apache24_x64\htdocs\vak\vendor\ramsey\collection\src\Map\TypedMap.php:87 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\vak\vendor\ramsey\collection\src\Map\TypedMap.php on line 87