Fatal error: Uncaught Error: Class 'Whoops\Handler\Handler' not found in C:\xampp\htdocs\laravel-firebird-update\vendor\nunomaduro\collision\src\Handler.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laravel-firebird-update\vendor\nunomaduro\collision\src\Handler.php on line 17