Fatal error: Uncaught Error: Class "DebugBar\DataCollector\RequestDataCollector" not found in D:\xampp\htdocs\lux_PHP\vendor\php-debugbar\symfony-bridge\src\SymfonyRequestCollector.php:18 Stack trace: #0 {main} thrown in D:\xampp\htdocs\lux_PHP\vendor\php-debugbar\symfony-bridge\src\SymfonyRequestCollector.php on line 18