Replace hera to bionic in the next files:
Use the following command to automate this process:
find /etc/apt -type f -print0 | sudo xargs -0 sed -i 's/hera/bionic/g'
It resolved itself with today's updates.
I think it is tied to Flatpak updates though, AppCenter is behaving weirdly when those are involved: by clicking Update All AppCenter does not asks for the user password, then closes itself. On reopening, the remaining non-Flatpak updates are still to be done, and at this point AppCenter asks for your password and ...
well i think this gonna work, you can create a archive .sh with root permissions with this comand sudo touch att_sis.sh. run this command on the folder that you know. open with this command sudo nano att_sis.sh, this command will open the archive on terminal and type it this commands sudo apt-get update &&
sudo apt-get upgrade -y && sudo apt ...
Your post is duplicated from
How do you make all updates install automatically?
Please stay calm. You can solve your problem. Duplicating your unanswered post doesn't help solve your and others issues, is just garbagge.
As I commented in your early post, you should fine tune your unattendet-upgrades config file.
You should edit your question and copy-...
1. backup your sources.list
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
2. change repos to bionic
sudoedit /etc/apt/sources.list and replace trusty with bionic. Probably some source lines are not the same for trusty and bionic so if you still have errors for them you better remove these repositories from your sources list, the safest way is ...
AppCenter is attempting to check for Operating Software Updates.
The solution is to update/correct the source lists included with the distribution.
Replace all instances of "hera" with "bionic" (in 5.1 Hera) in the following 4 files: