Warning: Undefined global variable $REDSYS_API_PATH in C:\xampp2\htdocs\APIREST\ApiRedsysREST\Model\element\RESTOperationElement.php on line 3

Warning: include_once(/Model/RESTGenericXml.php): Failed to open stream: No such file or directory in C:\xampp2\htdocs\APIREST\ApiRedsysREST\Model\element\RESTOperationElement.php on line 3

Warning: include_once(): Failed opening '/Model/RESTGenericXml.php' for inclusion (include_path='C:\xampp2\php\PEAR') in C:\xampp2\htdocs\APIREST\ApiRedsysREST\Model\element\RESTOperationElement.php on line 3

Fatal error: Uncaught Error: Class "RESTGenericXml" not found in C:\xampp2\htdocs\APIREST\ApiRedsysREST\Model\element\RESTOperationElement.php:8 Stack trace: #0 {main} thrown in C:\xampp2\htdocs\APIREST\ApiRedsysREST\Model\element\RESTOperationElement.php on line 8