Fatal error: Uncaught Error: Class 'Braintree\Http' not found in /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/integration/HttpClientApi.php:9 Stack trace: #0 /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/Setup.php(5): require_once() #1 /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/integration/MerchantAccountTest.php(4): require_once('/home/app/htdoc...') #2 {main} thrown in /home/app/htdocs/lidia/vendor/braintree/braintree_php/tests/integration/HttpClientApi.php on line 9