Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\batuhansunar\vendor\rubix\ml\tests\CrossValidation\Metrics\MeanSquaredErrorTest.php:16
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\batuhansunar\vendor\rubix\ml\tests\CrossValidation\Metrics\MeanSquaredErrorTest.php on line 16