sudo apt-get update
which returns these failures at the end:
W: Failed to fetch httpe://archive.ubuntu.com/ubuntu/dists/raring/main/binary-amd64/Packages Protocol httpe not supported or disabled in libcurl W: Failed to fetch httpe://archive.ubuntu.com/ubuntu/dists/raring/multiverse/binary-i386/Packages Protocol httpe not supported or disabled in libcurl E: Some index files failed to download. They have been ignored, or old ones used instead.
How can I fix this problem? I've looked all around and can't seem to find an answer.
lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty