Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/Setup.php:16 Stack trace: #0 /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/integration/HttpClientApi.php(4): require_once() #1 {main} thrown in /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/Setup.php on line 16