Fatal error: Uncaught Error: Interface 'PHPUnit_Framework_MockObject_MockObject' not found in E:\xampp\htdocs\key1\vendor\phpunit\phpunit-mock-objects\src\ForwardCompatibility\MockObject.php:15 Stack trace: #0 {main} thrown in E:\xampp\htdocs\key1\vendor\phpunit\phpunit-mock-objects\src\ForwardCompatibility\MockObject.php on line 15