Copy and Pasted Opera's extension JS example, threw errors. Why?

Question

Result

Question

This is what's being thrown, but it's not telling me where it is wrong. Given I copied and pasted their example to test that it wasn't just my own extension throwing errors, I would have expected this to work.

I copied this from here: https://dev.opera.com/extensions/basics/

Why is it breaking?

Update

It is now pointing me to errors in my JS that are on lines that do not exist. I would appreciate advice.

Updated Code

function ReturnInfo(tab) {
    var TitleVal = tab.title;
    var URLVal = tab.url;
    var Dte = new Date();
    var D = Dte.getDate();
    var M = Dte.getMonth();
    var Y = Dte.getFullYear();
    var DateRetrieed = `${D}/${M}/${Y}`;
}

var AllDict = chrome.tabs.getCurrent(ReturnInfo);