Fatal error: Uncaught Error: Class "Barryvdh\DomPDF\Tests\TestCase" not found in /var/www/html/vendor/barryvdh/laravel-dompdf/tests/PdfTest.php:9 Stack trace: #0 {main} thrown in /var/www/html/vendor/barryvdh/laravel-dompdf/tests/PdfTest.php on line 9