Fatal error: Uncaught Error: Class "Metadata\ClassMetadata" not found in C:\xampp\htdocs\electronica\vendor\jms\metadata\src\Metadata\MergeableClassMetadata.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\jms\metadata\src\Metadata\MergeableClassMetadata.php on line 5