Originally Posted by TobiSGD
Please post the command you launched including the whole output. Please use code-tags for posting this.
apt-get update && apt-get upgrade
or upgrade (which I am working on) did fail.
apt-get install update-manager-core
above commands will run and print the same error.
I tried steps such:
dpkg --configure -a
cp -r /var/lib/apt/lists /var/lib/apt/lists.bad
rm -r *
etc. with -f option as well, still the same.