add error handling to district view (#24543)

passerelle_montpellier_sig/views.py

@@ -239,6 +239,8 @@ class DistrictView(View, SingleObjectMixin):
 
         uri = 'commune/%s/voie/%s/numero/%s' %  (insee, nom_rue, numero)
         result = self.get_object().sig_request(uri)
+        if isinstance(result, dict) and result.get('error'):
+            return utils.response_for_json(request, {'data': []})
         if result:
             r = result[0]
             data = self.get_object().sig_request('adresse/%s/%s' %(r['geometry'].get('x'), r['geometry'].get('y')))