VIXX's "Error" music video surpassed 2 million views and they thanked their fans by releasing a dance practice video titled 'errored(?)'.

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VIXX started off with straight faces as they performed their intricate choreography, but then Ken gave a V-sign to fans and soon enough, N started breaking out into laughter which led to a chain reaction of fan service. Although the boys had a hard time trying to hold in their smiles and laughter, they still managed to perfectly pull off the choreography.

Check out the 'errored(?)' version above!

Tip: Jia, Linh