Database listRows method call failing in Flutter

I'm getting an error when trying to use listRows in a flutter app on a database. It seems something in the backend has changed because the production version of the app which has been working fine has suddenly stopped as well.

I have verified that it is in fact the listRows method failing and not the assignment after it (i.e. I didn't set latestVersion to a text parameter). Additionally, the listRows call seems to be failing in every other use across the app as well.

Attached are screenshots of what I believe to be relevant, including the relevant code snippet, screenshot of the database, and console error message. However, I don't believe my code can be the issue because the stable version of the app has stopped working without any modification to the code (which is what led me to look into this in the first place).

Thanks for any help in advance! :)