Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\hannoole\schol\vendor\mahesh-kerai\update-generator\tests\UpdateGeneratorTest.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hannoole\schol\vendor\mahesh-kerai\update-generator\tests\UpdateGeneratorTest.php on line 15