I did and am having this issue as well, let me know if you find a fix
Hey! If possible and if you're on PC, could you try these steps in order? We've seen some players get past the unexpected error by doing so:
Uninstall Sonic Studio
If you have a VPN, this might interfere. Be sure your anti virus isn't affecting the game too.
Reboot PC/Reinstall the game
Use the Saved Folder delete process: Search "%localappdata%" in your Windows search bar, find TOM, make a copy of the save folder on your Desktop for security and delete the original save folder.
Please let me know if any of this solves it - would really appreciate it just to verify. Thanks!
We tried for about an hour, sadly still didn’t work out
Hey! Is it possible to know which region you're matchmaking in? Will take a look at it with the team. Thanks!