Messes up (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">messes up</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for errs that I've seen before include "Goes astray" , "Sins" , "Is mistaken" , "Makes mistakes" , "Boobs" .)