W: The repository 'http://archive.ubuntu.com xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://archive.ubuntu.com/dists/xenial/universe/binary-amd64/Packages  404  Not Found [IP: 91.189.88.149 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
E: Read error - read (5: Input/output error)
W: You may want to run apt-get update to correct these problems
E: The package cache file is corrupted