Game won't load

I’m using Lutris, v. 0.5.12 on Pop!_OS 22.04 LTS x86_64. Diablo IV was working perfectly fine earlier today. I go to play this evening and the game won’t load at all. I check the logs and I see the following message:

Started initial process 9172 from /home/user/.local/share/lutris/runners/wine/lutris-GE-Proton8-7-x86_64/bin/wine /home/user/Games/battlenet/drive_c/Program Files (x86)/
Start monitoring process.
fsync: up and running.
wine: RLIMIT_NICE is <= 20, unable to use setpriority safely
[0614/] WSALookupServiceBegin failed with: 0
Initial process has exited (return code: 256)
Monitored process exited.
Exit with return code 256

Can anyone shed please shed some light on how I might fix this?