Fatal error: Uncaught Error: Interface "Symfony\Component\VarDumper\Cloner\ClonerInterface" not found in C:\xampp\htdocs\londoncityroom\vendor\symfony\var-dumper\Cloner\AbstractCloner.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\londoncityroom\vendor\symfony\var-dumper\Cloner\AbstractCloner.php on line 22