If you are using node-red-contrib-minio-all you should notice that it says:
Please Note: This set of nodes (and associated support information) is a work in progress.
and it hasn't been update in over two years.
You could open an issue on the node's GitHub page however the author(s) don't seem to be answering questions or maintaining the node so you might want to explore other ways to do what you are trying to do.