Upgraded from 9.1.5 to 9.1.6 – All Listing Links Broken

Since updating the theme, I have noticed that all the coupon code / offer links are coming out as “undefined”.

out/undefined/link/

and

/?__sid=undefined

I made a clone of the production site again and made an update again oin a different server and I’m getting similar results. Coupon Code links aren’t going to the actual store, just reloading the same page.