Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/apikharedi/public_html/api/vendor/unicodeveloper/laravel-paystack/tests/PaystackTest.php:21 Stack trace: #0 {main} thrown in /home/apikharedi/public_html/api/vendor/unicodeveloper/laravel-paystack/tests/PaystackTest.php on line 21