Hi all of a sudden, my rating stars won't work, I have updated to Joomla 3.8.10 and it's still not working, when you click to rate it just adds a # to the end of the URL.

Here's where it's happening >> cardiffwebservices.co.uk/blog

It also happened to another website recently, I ended up doing a backup and they luckily went back to normal. But oddly no changes were made to either website that could have caused it.

Hello,

The order that the scripts are being loaded is wrong.
You need to try the following:
a) Enable the loading of jQuery from K2's settings
b) Use the jQuery extension.