I ended up installing the old version of apt downloaded from https://launchpad.net/ubuntu/+source/apt/0.9.15.4ubuntu3/+build/5872859 then locked the version using the synaptic package manager. I guess I just stick with this version until the problem's solved.
I ended up installing the old version of apt downloaded from https:/ /launchpad. net/ubuntu/ +source/ apt/0.9. 15.4ubuntu3/ +build/ 5872859
then locked the version using the synaptic package manager. I guess I just stick with this version until the problem's solved.