Ratings breaks page Joomla 3.7.5

Hi, we recently upgraded to Joomla 3.7.5 and the latest TechNews 1.0.6 but recently noticed some major issues on pages with the "Ratings" feature added.

Some won't load at all and looking at F12 Developer options output seems to be triggering a 404 page error for some reason. For example http://www.metropower.info/how-to-guide ... i-roll-bar

Other pages with the same code on work fine e.g. http://www.metropower.info/how-to-guide ... ring-guide

Any ideas?

Done a bit more testing on my local copy of the site and worked from my last backup to find what's changed.
Seems updating K2 from 2.7.2 to the new 2.8.0 is what breaks the Ratings feature, can you replicate at all on your systems?