Fatal error: Uncaught Error: Class "Whoops\Handler\Handler" not found in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\nunomaduro\collision\src\Handler.php:17 Stack trace: #0 {main} thrown in C:\AppServ\Apache\2.4.58\htdocs\sets\vendor\nunomaduro\collision\src\Handler.php on line 17