Fatal error: Uncaught Error: Class "Illuminate\Routing\Controller" not found in D:\programs\xampp\htdocs\backend-test\vendor\laravel\telescope\src\Http\Controllers\MailHtmlController.php:8 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\laravel\telescope\src\Http\Controllers\MailHtmlController.php on line 8