Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /users/maximus/www/storage/vendor/klarna/kco_rest/tests/Unit/Transport/UserAgentTest.php:27 Stack trace: #0 {main} thrown in /users/maximus/www/storage/vendor/klarna/kco_rest/tests/Unit/Transport/UserAgentTest.php on line 27