Get:18
http://mirror.ppa.trinitydesktop.org/trinity/trinity-r14.0.0/debian
stretch InRelease [12.2 kB]
Get:19
http://mirror.ppa.trinitydesktop.org/trinity/trinity-builddeps-r14.0.0/d
ebian stretch InRelease [12.0 kB]
Err:18
http://mirror.ppa.trinitydesktop.org/trinity/trinity-r14.0.0/debian
stretch InRelease
The following signatures couldn't be verified because the public key
is not available: NO_PUBKEY C93AF1698685AD8B
Err:19
http://mirror.ppa.trinitydesktop.org/trinity/trinity-builddeps-r14.0.0/d
ebian stretch InRelease
The following signatures couldn't be verified because the public key
is not available: NO_PUBKEY C93AF1698685AD8B
...
E: The
repository
'http://mirror.ppa.trinitydesktop.org/trinity/trinity-builddeps-r14.0.0/
debian stretch InRelease' is no longer signed.
Hi Michael,
you obviously don't have the trinity-keyring package installed and that's
why you felt the change of the signing key. See: