Fatal error: Uncaught Error: Class 'Symfony\Component\VarDumper\Cloner\Stub' not found in C:\xampp\htdocs\plugins\Symfony\Component\VarDumper\Caster\ScalarStub.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\plugins\Symfony\Component\VarDumper\Caster\ScalarStub.php on line 21