gpg: key 2D230C5F: no valid user IDs
gpg: this may be caused by a missing self-signature
gpg: key 6070D3A1: no valid user IDs
gpg: this may be caused by a missing self-signature
gpg: key ADB11277: no valid user IDs
gpg: this may be caused by a missing self-signature
gpg: Total number processed: 3
gpg:           w/o user IDs: 3
dpkg: error processing apt (--configure):
 subprocess post-installation script returned error exit status 2
Errors were encountered while processing:
 apt
E: Sub-process /usr/bin/dpkg returned an error code (1)