Hi @MarkSmithWLC and @James_Stein
Shuji at Zwift HQ here. Thanks both for reporting this crash. I peeked at your server logs and as @Francisco_J called out - a common thread is that both of your Apple TV boxes have updated to tvOS 18.3 in recent days.
We’re investigating this clue as a starting point. Please keep an eye on this thread for updates.