Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\Locsy\vendor\rubix\ml\tests\Classifiers\LogisticRegressionTest.php:32 Stack trace: #0 {main} thrown in C:\xampp\htdocs\Locsy\vendor\rubix\ml\tests\Classifiers\LogisticRegressionTest.php on line 32