I installed Elementary OS since 2 weeks now, and I wanted to install Syncthing, what I did... But I went to this page and due to my window width, I typed 2 commands instead of one :
echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list
sudo tee /etc/apt/sources.list/syncthing.list
Or something like that, I don't remember precisely. Then I typed the entire command without error :
echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list
This didn't prevented me to install Syncthing.
But after that, I had a error message from the appcenter telling me that it wasn't able to update its database, since then I can only see the installed apps in the AppCenter and install some that it already had in memory in the suggestion category. The error message doesn't appears anymore, because the AppCenter, even after multiple uninstall (with
apt purge) reboot and reinstall, doesn't have anymore the little spinning round which normally indicates it is looking for updates or some software corresponding to what you typed in the research field.
So my computer is still usable but I can't do any update or searching/installing software via the AppCenter anymore.
Also,it is strange there is no such OS update that I was used to with the AppCenter when I do it with:
Each day I normally have a new software update, I think because juno is young. And here no update since two days! Moreover, if this problem get fixed with an update, I will not be able to do this update. As you can see I learn Italian, I'm french and I am writing in English; please excuse me for language issues.
Thank you for reading me until here, if somebody has an idea.