That's definitely odd, have you tried clearing your cache & cookies with these steps: https://goo.gl/H7o2Na ? Also, try different browser and let us know if that does the trick.
@TeamYouTube Pls help me i tried to put a banner in my youtube channel and then show me this.Please help me.pic.twitter.com/trsey7Nm67
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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