Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/html/ooclick/ooclick-laravel-v1/src/tests/Unit/ExampleTest.php:7 Stack trace: #0 {main} thrown in /var/www/html/ooclick/ooclick-laravel-v1/src/tests/Unit/ExampleTest.php on line 7