wkwebview mjpg

I am trying to stream an mjpg URL using Safari 11.1 (13605.1.33.1.2) on my Macbook pro (OS 10.13.4) and all I get from the browser is "A problem repeatedly occured with "http://www.pawsitivelyheavenpetresort.com/copy-of-webcam-views" " This works fine in other browsers like Chrome. It used to work in Safari as well. More importantly I have an iOS app that can no longer stream these mjpg's in a wkwebview. The exact same code works in iOS 10.2 does not work in iOS 11.3 . What changed? As far as I know, this worked in iOS 11.2.