The “coords” attribute of the <area shape="poly"> tag is missing the last “y” coordinate (the correct format is “x1,y1,x2,y2 …”).
Mu "coords" ezikwata ku taga ya <area shape="poly"> teziri ku "y" esembayo enambaa eziranga ekifu (longoosa fomati ku "x1,y1x2,y2 …").