ISTWCMS-4947: ensure that location address and map either has values or null

src/Service/UWService.php

@@ -357,11 +357,18 @@ class UWService implements UWServiceInterface {
             break;
 
           case 'map':
-            $display = [
-              'type' => 'leaflet_formatter_default',
-              'label' => 'visually_hidden',
-            ];
-            $node_data['map'] = $node->$data->view($display);
+            // Set the map initially to null, if there are
+            // coordinates, then will be replaced.
+            $node_data['map'] = NULL;
+
+            // If there are coordinates, set the map.
+            if ($node->$data->getValue()) {
+              $display = [
+                'type' => 'leaflet_formatter_default',
+                'label' => 'visually_hidden',
+              ];
+              $node_data['map'] = $node->$data->view($display);
+            }
             break;
 
           case 'sources':