From the latest "apt update":

------------------------------
W:
gpgv:/var/lib/apt/lists/archive.getdeb.net_ubuntu_dists_wily-getdeb_InRelease:
The repository is insufficiently signed by key
1958A549614CE21CFC27F4BAA8A515F046D7E7CF (weak digest)
W:
gpgv:/var/lib/apt/lists/packages.devuan.org_merged_dists_unstable_InRelease:
The repository is insufficiently signed by key
72E3CB773315DFA2E464743D94532124541922FB (weak digest)
------------------------------

The repositories are not available. I am using Ceres/Unstable.


Mitt