Fatal error: Uncaught Error: Class 'Braintree\Exception' not found in /opt/bitnami/apache/htdocs/taxi_app/WebServices/braintree/lib/Braintree/Exception/Authentication.php:14 Stack trace: #0 {main} thrown in /opt/bitnami/apache/htdocs/taxi_app/WebServices/braintree/lib/Braintree/Exception/Authentication.php on line 14