@Friendiqa I published a new version of the Android app on github, fdroid binary repo and Playstore. Notable changes are a link to a list of public servers in the config page and the possibility to share text and urls to Friendiqa. The SendMessage page got some design changes and bug fixes.
I opened issue #4838 on Friendica github. I also posted a newsitem where I got the error. There is nothing I can do on the client side. The error has to be fixed in the server side. It disappears if you delete the newsitem with the error from the Web UI.