Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in E:\xampp\htdocs\api.astka\vendor\sebastian\object-enumerator\tests\EnumeratorTest.php:18 Stack trace: #0 {main} thrown in E:\xampp\htdocs\api.astka\vendor\sebastian\object-enumerator\tests\EnumeratorTest.php on line 18