Unable to cast to Chromecast from Android app or browser.
Some time in the recent past I lost the ability to cast media from my Plex server to my Chromecasts. In both the Android app (on two different phones) and through a web browser, I can connect to the Chromecast, but when trying to play media, it spins for a bit and then says "Unable to cast. The media is currently unavailable." I have two Chromecasts, neither work.
I've tried reinstalling the Android apps, as well as reinstalling the server software.
I am able to cast to a Fire stick, using both the Fire UI and through the Android app.
Any help appreciated.
Server is running on W10, Version 188.8.131.5203. Android app is v184.108.40.20658.