I'm on Raspberry Pi 4 on 2020.02.26.0338. I'm having issues with NFL network giving error when its in my Directv package. and one suggestion was download the the latest pre-release build, but when i try to update says its up to date. The NFL network error says "invalid character '<' looking for beginning of value" and wont allow me to authorize the channel.
You have to click-and-hold on the Update button.