Fatal error: Uncaught Error: Class 'Ramsey\Collection\Map\AbstractMap' not found in D:\xampp\htdocs\app_patient_test\vendor\ramsey\collection\src\Map\NamedParameterMap.php:29 Stack trace: #0 {main} thrown in D:\xampp\htdocs\app_patient_test\vendor\ramsey\collection\src\Map\NamedParameterMap.php on line 29