Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in D:\xampp7\htdocs\www\nbkm\show_ir\vendor\sebastian\comparator\tests\ScalarComparatorTest.php:21 Stack trace: #0 {main} thrown in D:\xampp7\htdocs\www\nbkm\show_ir\vendor\sebastian\comparator\tests\ScalarComparatorTest.php on line 21