Scary... There might be a generated crash log in your %APPDATA%\Roaming\Godot\app_userdata\DesktopPets folder that you can grab for me. I would recommend redownloading the game in full again and make sure Windows didn't purge a file by accident
Hmmm, it seems your .NET is old or not installed. Weird, that's very rare in this day and age. You can grab .NET 8.0 from here and that should fix the issue?
