so now when re open appcenter i get same error/aler box saying
E: http://dl.google.com/linux/chrome/deb stable InRelease is not (yet) available (Could not connect to dl.google.com:80 (184.108.40.206), connection timed out)
E: http://ppa.launchpad.net/alexlarsson/flatpak/ubuntu bionic InRelease is not (yet) available (Could not connect to ppa.launchpad.net:...
I have a slightly different problem; AppCenter is notifying me that there are updates, and when I click on AppCenter/Installed, it shows me the updates. However, when I click on "Update all" and enter my password, in less than a second I see in this order; "Loading cache", "Finished", "Starting" and it stops, not having updated anything, still showing the ...
Found this link in my searches:
Error while doing 'sudo apt update': no Release file
I was able to do apt upgrade.
App-center still doesn't work
edit appcenter, elementary and patches .list flies - remove any refrence to Hera / Juno to Bionic and save.