Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /var/www/ebeosi.com/vendor/mehedi-iitdu/laravel-paystack/tests/PaystackTest.php:21 Stack trace: #0 {main} thrown in /var/www/ebeosi.com/vendor/mehedi-iitdu/laravel-paystack/tests/PaystackTest.php on line 21