Yusuke KIUCHI

@feus4177 As a temporary workaround I changed [this function at executor.py](https://github.com/graphql-python/graphql-core/blob/master/graphql/execution/executor.py#L480) like ```py def handle_error(error): import traceback; traceback.print_tb(error.original_error.__traceback__) # this line has been inserted # type: (Union[GraphQLError, GraphQLLocatedError]) -> Optional[Any]...

@na9da Thank you for reviewing. I removed unused CSS classes. I noticed the position of the story menu was off in my initial version, so I fixed it as well....