Fatal error: Uncaught Error: Class "Braintree\Collection" not found in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/braintree/braintree_php/lib/Braintree/Error/ValidationErrorCollection.php:15 Stack trace: #0 {main} thrown in /home/kwanzo/public_html/pos.kwanzoballoon.com/vendor/braintree/braintree_php/lib/Braintree/Error/ValidationErrorCollection.php on line 15