Fatal error: Uncaught Error: Class 'Functional\Tests\AbstractPartialTestCase' not found in C:\xampp\htdocs\fiveplus\vendor\lstrojny\functional-php\tests\Functional\PartialRightTest.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\fiveplus\vendor\lstrojny\functional-php\tests\Functional\PartialRightTest.php on line 15