Fatal error: Uncaught Error: Interface "Whoops\Handler\HandlerInterface" not found in D:\Apache24\www\dls\back-end\vendor\nunomaduro\collision\src\Contracts\Handler.php:13 Stack trace: #0 {main} thrown in D:\Apache24\www\dls\back-end\vendor\nunomaduro\collision\src\Contracts\Handler.php on line 13