zyga@ubuntu-trusty:~$ snap list
Name                 Version    Rev   Developer  Notes
canonical-livepatch  7.24       26    canonical  -
core                 16-2.28.5  3247  canonical  core
hello-world          6.3        27    canonical  -
zyga@ubuntu-trusty:~$ snap interfaces
error: no interfaces found
zyga@ubuntu-trusty:~$ sudo cat /var/log/snapd.err 
[sudo] password for zyga: 
2017/10/26 10:50:09.440703 daemon.go:252: started snapd/2.27.5~14.04 (series 16; classic) ubuntu/14.04 (amd64) linux/4.4.0-97-generic.
2017/10/26 10:50:20.044333 daemon.go:252: started snapd/2.27.5~14.04 (series 16; classic) ubuntu/14.04 (amd64) linux/4.4.0-97-generic.
2017/10/26 10:50:27.689750 helpers.go:99: snap epoch cannot be empty
2017/10/26 10:50:27.690546 helpers.go:99: snap epoch cannot be empty
2017/10/26 10:50:27.690681 helpers.go:206: cannot connect plug "network-bind" from snap "canonical-livepatch", no such plug
2017/10/26 10:50:27.690697 helpers.go:206: cannot connect plug "network-control" from snap "canonical-livepatch", no such plug
2017/10/26 10:50:27.690704 helpers.go:206: cannot connect plug "network-manager" from snap "canonical-livepatch", no such plug
2017/10/26 10:50:27.690721 helpers.go:206: cannot connect plug "system-observe" from snap "canonical-livepatch", no such plug
2017/10/26 10:50:27.690728 helpers.go:206: cannot connect plug "core-support-plug" from snap "core", no such plug
2017/10/26 10:50:27.690735 helpers.go:206: cannot connect plug "hardware-observe" from snap "canonical-livepatch", no such plug
2017/10/26 10:50:27.690742 helpers.go:206: cannot connect plug "kernel-module-control" from snap "canonical-livepatch", no such plug
2017/10/26 10:50:29.249100 daemon.go:252: started snapd/2.27.5~14.04 (series 16; classic) ubuntu/14.04 (amd64) linux/4.4.0-97-generic.