Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in E:\xampp\htdocs\key1\vendor\phar-io\manifest\tests\xml\AuthorElementTest.php:5 Stack trace: #0 {main} thrown in E:\xampp\htdocs\key1\vendor\phar-io\manifest\tests\xml\AuthorElementTest.php on line 5