Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\rhis-portal\vendor\sebastian\resource-operations\tests\ResourceOperationsTest.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\rhis-portal\vendor\sebastian\resource-operations\tests\ResourceOperationsTest.php on line 17