Hello! Sorry for the delayed reply. We asked the lead programmer what might the be cause, and they found this article talking about a similar issue with Instagram showing the same error:
https://en.paperblog.com/how-to-fix-instagram-closed-because-this-app-has-a-bug-...
There are a few steps listed in there that might help fix this, with the most relevant being clearing your device's cache and data, or a clean reinstall of the game. Hopefully that helps, but if you're still having issues, let us know. Thanks for playing!