You're allowed up to 20 relays. But it looks like your 11th relay has an invalid url - is there anything weird about that relay url (or any of the others)?
eagle eyes... Thank you! I wonder how the hell that space ended up there 🤔 the relay should have not been validated and saved in the first place. Anyhow, problem solved
Looks like this was plaguing 4 other stackers as well but none of them noticed or reported it. I went in and fixed it for them. Thanks for helping me figure it out!