By Tom Gott Virgil van Dijk has taken responsibility for the comedy of errors that led to Arsenal’s second goal in their 3-1 victory over Liverpool on Sunday. Having been hammered in the first half, Liverpool battled their way back into the game in the early stages of the second half, but one long ball up to Gabriel Martinelli with 25 minutes to go ultimately changed proceedings. The awkward bounce caught out both Van Dijk and goalkeeper Alisson, who came charging off his line. The Liverpool duo failed to clear the ball and instead handed it to Martinelli to slot into an empty net. “I take ful…