Se soluciona un pequeño bug de extraData null

Resources/views/Leaflet/map.html.twig

@@ -16,7 +16,7 @@
 
 {% if object is defined %}
 <script type="text/javascript">
-    {% if object.extraData %}
+    {% if object.extraData is defined %}
     var dataValue = '{{ object.extraData|raw }}';
     {% elseif object.location is defined %}
     var dataValue = '{{ object.location.extraData|raw }}';