OK, don't be mad, but it seems that "28days" is not a valid YouTube channel id . . .

It might be the user id or the channel title, but isn't a unique channel id. If you want to add 28days to the database and track the channel's stats you need to copy and paste the channel id from the end of its YouTube url. Sometimes this is a username, or a word, or even a string of weird characters. All you need is that last portion of text after the slash.

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