Fatal error: Uncaught Error: Class "Illuminate\Tests\View\Blade\AbstractBladeTestCase" not found in C:\xampp\htdocs\astra-backoffice\vendor\laravel\framework\tests\View\Blade\BladeEchoHandlerTest.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\laravel\framework\tests\View\Blade\BladeEchoHandlerTest.php on line 10