Hi,

You can safely ignore this warning or look it up on the web.

To get the E-Mail actually sent, you would have to configure the E-Mail settings in the docker-compose file. Please look up the instructions on how to do this in the forum via the search. If you don't want to setup this, you can also login as the admin, go to "Admin", "Emails", look up the desired E-Mail and click the link. This is how I do it, as I am the only user on the instance and I didn't want to configure the E-Mail config.