如何修复我的ReferenceError

Question

I've got a WordPress website I've been working on for a project of mine, the website is not nearly finished, On the website I have a button "Create A Clan" Which uses Visual composer (A plugin) I've reached out to WP Support with no aid, When I click on the "Create A Clan" Button, The visual composer just loads, and loads. I hit "F12" To try to see what is going on, and I have this error in the panel.

"Uncaught TypeError: undefined is not a function this.activities_list[i].call(window);

Uncaught ReferenceError: i is not defined(anonymous function) @ VM922:1InjectedScript._evaluateOn @ VM921:883InjectedScript._evaluateAndWrap @ VM921:816InjectedScript.evaluate @ VM921:682.

I have no idea what the above means. It tells me that the error is inside of my "vc_Page_Editable.js" folder, within my theme. On line 292.

   window.vc_google_fonts();
this.collectScriptsData();
this.loadInlineScripts();
this.loadInlineScriptsBody();
for(var i in this.activities_list) {
   this.activities_list[i].call(window);
}

I can add the ENTIRE files contents if needed.

Answer 1

It looks like there is an issue with the list and one of the elements or properties in the list is undefined, so I would say safest bet is to check if that's the case and skip to the next element.

for(var i in this.activities_list) {
    if(!i || !this.activities_list[i])
        continue;
   this.activities_list[i].call(window);
}