As long as that is there you still have this section configured in configuration.yaml (albeit empty). It should be removed too to revert to setting things through the gui.
Beware though, if you added the external url to get the Withings in bed sensor working - I’m not sure if that will keep working if you revert to editing these settings in the gui. I couldn’t get it to work without adding this line in the configuration.yaml.
But why do you need it back in the gui? Is there anything there that won’t work when configured in configuration.yaml?
Is there still an indented line below the commented home assistant line causing the error? I do not use this editor anymore, but doesn’t the red dot have an error message when you click it or something?
Specifying the internal and external url in config.yaml should be equivalent to specifying it in the gui though, so I doubt that will make any difference. Either place should work, as specifying those should do the trick according to another post.
That’s what I though also, but I read some topic which suggested to use system/network for TTS issue. Basically when I have those ext/int url in my configuration file it fills them naturally to system/network automatically - as stated in my topic “Idon’t get it” - I though my original confic was correct: