Can no longer cast local media to Chromecast
A few days ago I stopped being able to cast content from my Plex iOS apps to my Chromecasts (I have a 2nd generation and a Chromecast Ultra), the content begins to load and throws a 'Sorry! Something went wrong' error on the TV, meanwhile the content seems to be endlessly loading on my phone but never plays. I can play content just fine on my iOS device until I try and cast it.
Content from friends' servers casts just fine, the problem appears to only be with my content when casted. All content is local, not synced.
I've tried updating my Plex Media Server to the latest version, both Chromecasts are up to date and the iOS app is also the most current available. I've wiped my router configuration to see if it was a network issue but this didn't work either so I have restored my router configuration again now. My Plex Media Server runs on a Windows 7 machine and my router is dd-wrt.
Attached are my iOS app logs, hopefully someone is able to help. Thanks in advance.
(SERVER-PC and Doddle Jake are my local Plex servers, both of which serve content in a web browser and the iOS app but will not cast).