We've got exactly the same thing. Can't find any help at all 
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I've been told that it could be You Tube not doing updates to certain age smart TV'S as they're too old.
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Hmm, if you're using the app on your Smart TV, check if you have the latest app version. If you're using the TV browser, try clearing the cache and cookies. Let us know if this helps.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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