Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\medivault\vendor\sc0vu\web3.php\test\TestCase.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\medivault\vendor\sc0vu\web3.php\test\TestCase.php on line 8