Parasite Infection

Am the only person that I cannot continue playing Part 5?

VM7:13386 Uncaught TypeError: Cannot read properties of undefined (reading 'area')

    at eval (eval at call.output.output (Parasite_Infection.html:3:140549), <anonymous>:13386:48)

    at Array.forEach (<anonymous>)

    at window.change_npc_passage_visibility (eval at call.output.output (Parasite_Infection.html:3:140549), <anonymous>:13378:7)

    at eval (eval at call.output.output (Parasite_Infection.html:3:140549), <anonymous>:1:1)

    at call.output.output (Parasite_Infection.html:71110:140549)

    at Object.evalJavaScript (Parasite_Infection.html:71110:140561)

    at Parasite_Infection.html:71110:154270

    at HTMLAnchorElement.<anonymous> (Parasite_Infection.html:71110:147255)

    at HTMLAnchorElement.<anonymous> (Parasite_Infection.html:71110:45856)

    at HTMLAnchorElement.<anonymous> (Parasite_Infection.html:71110:45634)