Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/shriarthijewelle/public_html/app/vendor/laracasts/flash/tests/FlashTest.php:6 Stack trace: #0 {main} thrown in /home/shriarthijewelle/public_html/app/vendor/laracasts/flash/tests/FlashTest.php on line 6