system Update failure

Question

I have latest version — juno which used to bring frequent notifications for update and used to get updated easily but for the last 3 weeks it has stopped sending notifications and doesn't get updated at all and is showing a cogwheel item in dock as well which doesn't show any description on hovering mouse on. Already tried sudo apt update && sudo apt upgrade but doesn't work.

any idea about fixing this issue?

Answer 1

So i worked it out by using following commands;

sudo apt-get clean
sudo apt-get update
sudo apt-get upgrade

so thanks for your help, probably it was broken repository which was cause of trouble