W:GPG error: https://download.01.org trusty InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A902DDA375E52366, W:GPG error: http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4C1CBE14852541CB, W:Failed to fetch http://repository.spotify.com/dists/trusty/main/binary-amd64/Packages 404 Not Found [IP: 54.230.93.74 80]
, W:Failed to fetch http://repository.spotify.com/dists/trusty/main/binary-i386/Packages 404 Not Found [IP: 54.230.93.74 80]
, W:Failed to fetch https://launchpad.net/~nesthib/+archive/weechat-stable/dists/trusty/main/binary-amd64/Packages HttpError404
, W:Failed to fetch https://launchpad.net/~nesthib/+archive/weechat-stable/dists/trusty/main/binary-i386/Packages HttpError404
, W:Failed to fetch https://launchpad.net/~nesthib/+archive/ubuntu/weechat-stable/dists/trusty/main/binary-amd64/Packages HttpError404
, W:Failed to fetch https://launchpad.net/~nesthib/+archive/ubuntu/weechat-stable/dists/trusty/main/binary-i386/Packages HttpError404
, E:Some index files failed to download. They have been ignored, or old ones used instead.