Use ApiService to get error message

endpoints/api/error.py

@@ -17,7 +17,7 @@ def error_view(error_type):
 @resource('/v1/error/<error_type>')
 @path_param('error_type', 'The error code identifying the type of error.')
 class Error(ApiResource):
-  """ Resource for manging an organization's teams. """
+  """ Resource for Error Descriptions"""
   schemas = {
     'ApiErrorDescription': {
       'type': 'object',