Error with lets encrypt update

freedombox is plugged into router

You are running Debian GNU/Linux 10 (buster) and FreedomBox version 19.13. FreedomBox is up to date.
when I visit the settings page for Letsencrypt, there’s a message saying the app needs an update but when I run the “submit query” button it gives an error:

Error installing application: Error during installation E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'testing' to 'stable' E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'testing' to 'stable' E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'testing-updates' to 'stable-updates'

This is preventing me from using openvpn as well as that uses the public domain I’ve registered

You are facing this issue: On the "Error installing application" message on your Olimex device It requires manual intervention.