In v3.0.8, the "Remote" icon displays the following warning:

Clicking on this displays:

Changing the settings for this:

We are using a locally-hosted repository so none of the optional fields are applicable. This isn't really "optional" if the UI is going to indicate it as a severe problem with a non-dismissable red exclamation. It needs to be changed to not always show a warning message when this is configured or allow it to be dismissed in some manner.