fix undefined name response (#104)

Author: stephaschu

src/config_generator/capabilities_reader.py

@@ -138,7 +138,7 @@ def read_wms_service_capabilities(self, service_name, item, themes_config):
             if root_layer is None:
                 self.logger.warning(
                     "No root layer found for %s: %s" %
-                    (full_url, response.content)
+                    (full_url, document)
                 )
                 return {}
 
@@ -490,7 +490,7 @@ def read_wfs_service_capabilities(self, service_name, item):
             if feature_type_list is None:
                 self.logger.warning(
                     "No FeatureTypeList found for %s: %s" %
-                    (full_url, response.content)
+                    (full_url, document)
                 )
                 return {}