Hamburger Menu Button Not Working (Debut Theme)

New Member
1 0 0

I'm using the Debut theme and have an issue with the hamburger menu button not working. It will work once but when I navigate to a new page nothing happens when I press the button again. When the page loads the following message is shown on the console for theme.js:

TypeError: $.debounce is not a function. (In '$.debounce(50, function() {
})', '$.debounce' is undefined)

If I manually empty caches through the browser and reload the page the error no longer appears in the console and the button works again. However, once I navigate away from the page the issue returns. 

Any help would be greatly appreciated.