Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in C:\xampp\htdocs\enercard\vendor\sebastian\comparator\tests\SplObjectStorageComparatorTest.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\sebastian\comparator\tests\SplObjectStorageComparatorTest.php on line 20