Fatal error: Uncaught Error: Class 'Symfony\Component\VarDumper\Cloner\VarCloner' not found in D:\xampp\htdocs\app_patient_test\vendor\psy\psysh\src\VarDumper\Cloner.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\app_patient_test\vendor\psy\psysh\src\VarDumper\Cloner.php on line 21