Fatal error: Uncaught Error: Undefined constant "AMFPHP_BASE" in /exports/econexpprod1.pearsoncmg.com/htdocs/amfphp/core/amf/io/AMFDeserializer.php:13 Stack trace: #0 {main} thrown in /exports/econexpprod1.pearsoncmg.com/htdocs/amfphp/core/amf/io/AMFDeserializer.php on line 13