ISTWCMS-4947: fixing undefined index error again

src/Service/UWService.php

@@ -316,7 +316,11 @@ class UWService implements UWServiceInterface {
             break;
 
           case 'address':
-            $node_data['address'] = $node->$data->value;
+            $node_data['address'] = NULL;
+            $address = $node->$data->getValue();
+            if (isset($address[0])) {
+              $node_data['address'] = $address[0];
+            }
             break;
 
           case 'author':