W:Failed to fetch http://extras.ubuntu.com/ubuntu/dist...rce/Sources.gz 404 Not Found
, W:Failed to fetch http://extras.ubuntu.com/ubuntu/dist...86/Packages.gz 404 Not Found
, E:Some index files failed to download, they have been ignored, or old ones used instead.
, W:Failed to fetch http://extras.ubuntu.com/ubuntu/dist...86/Packages.gz 404 Not Found
, E:Some index files failed to download, they have been ignored, or old ones used instead.