That's odd! What device are you on? If you're on a browser, try clearing the cache and cookies. If you're on a mobile device, try these steps: delete the app > restart your device > reinstall the app. This usually clears things up but let us know if it's still not working!
@TeamYouTube yes i have recently tried to start a YouTube channel (no videos yet) and when i try to costumize my channel with a banner it says to sign in and then says error
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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Why want to change the past when you have got a future ahead of you