GSS is not define here.

And display is not supported anymore. This change broke the menu of the website.

js/script.js

@@ -7,7 +7,7 @@
       console.time("display");
     }
   }
-  GSS.once("display", function() {
+  engine.once("solve", function() {
     if (typeof console !== "undefined" && console !== null) {
       if (typeof console.timeEnd === "function") {
         console.timeEnd("display");