There's no way for me to use MTG Arena after the Dec 12, 2023, update.

On Windows 11 PC (non-Steam client), as I run MTG Arena, I see the following screens: 1) Loading initial scene, 2) Waiting for the Server, 3) Error (see attached screenshot). I have tried restarting the program multiple times over a period of 20 hours. There's no opportunity for me to login or try another account—all I can interact with is the Error screen.