Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\BoostForge\vendor\rubix\ml\tests\Specifications\EstimatorIsCompatibleWithMetricTest.php:19
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\BoostForge\vendor\rubix\ml\tests\Specifications\EstimatorIsCompatibleWithMetricTest.php on line 19