You don't need the comma there and technically it's incorrect. If you place it there, you are instructing your reader to pause significantly, and if there was some dramatic effect you wanted to achieve, I suppose you could do this, although a strict prescriptionist would tell you it's wrong. There may be times with a very complex predicate when you might insert a comma there to indicate that the next big old predicate is coming (and even then a prescriptivist editor may remove it), but with a sentence this short, it's totally unnecessary.
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