Server Version#: 1.19.1.2701-6327e27bf
Player Version#: 7.31.0.16802
I have Xiaomi Mi Box S and with New Player enabled. I received this error message
“An error occurred while attempting to play this video. Please try restarting both the Plex Media Server and this app”
Disabling New Player fixes the issue.
Please fix, I prefer the New Player over the old one due to ease of playback navigation.