Hi, I don't think the Xenial files have made it to those repos....
W: The repository 'http://ddebs.ubuntu.com xenial-security 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://ddebs.ubuntu.com/dists/xenial-security/main/binary-amd64/Packages 404 Not Found E: Failed to fetch http://ddebs.ubuntu.com/dists/xenial-security/main/binary-i386/Packages 404 Not Found E: Failed to fetch http://ddebs.ubuntu.com/dists/xenial-security/restricted/binary-amd64/Packages 404 Not Found E: Failed to fetch http://ddebs.ubuntu.com/dists/xenial-security/restricted/binary-i386/Packages 404 Not Found E: Failed to fetch http://ddebs.ubuntu.com/dists/xenial-security/universe/binary-amd64/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587528 Title: Debug symbols not showing up on APT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/php7.0/+bug/1587528/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs