fix if no competition

main.js

@@ -958,6 +958,9 @@
   }
 
   function addStickyMenu() {
+    let competition = getCompetition()
+    if (!competition) return
+
     let menuContainer = document.createElement("nav")
     menuContainer.classList.add("sticky-menu")
     let menu = document.createElement("menu")
@@ -973,7 +976,7 @@
     for (const [label, href] of Object.entries(links)) {
       let menuItem = document.createElement("li")
       let link = document.createElement("a")
-      link.href = `/${getCompetition()}/${href}`
+      link.href = `/${competition}/${href}`
       link.innerText = label
 
       if (label === "Легенда") {