Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/xaviers-college-erpweb/vendor/webpatser/laravel-uuid/tests/SqlServerGuidTest.php:18 Stack trace: #0 {main} thrown in /var/www/html/xaviers-college-erpweb/vendor/webpatser/laravel-uuid/tests/SqlServerGuidTest.php on line 18