Fatal error: Uncaught Error: Class 'PayPal\Common\PayPalModel' not found in /home/ultraunlock/public_html/PayPal-PHP-SDK/tests/PayPal/Test/Common/ArrayClass.php:6 Stack trace: #0 {main} thrown in /home/ultraunlock/public_html/PayPal-PHP-SDK/tests/PayPal/Test/Common/ArrayClass.php on line 6