Hi, I just want to give my thought. Not sure if it help or not.
If we install Chromium, there should be a custom config for each user inside ~/.config/chromium. I’m just wonder if you have different Chromium version before (like say newer version) and you installing the older one, then the older Chromium version will use this config directory or any other local config related to Chromium inside home directory.
I’m not sure how to solve this, but may be you need to remove all Chromium from your system except the version you need. Then test it by creating new user to try using clean config from your desired Chromium version (or maybe just clean all Chromium config directory and other related to it in your current user home folder).
Since above messages look like because of Chromium version incompatibility.