ubuntu-18.04.2 software updater stopped at snapd

I experimenced ubuntu-18.04.2 software updater stopped at snapd step.
I found this sutiation, I reboot PC. and restart software updater.
I send syslog, and I reboot time at Jul 2 19:01:21.

Jul 2 19:00:35 asrock gnome-software[3114]: Only 8 apps for popular list, hiding
Jul 2 19:00:36 asrock systemd[1]: Reloading.
Jul 2 19:00:36 asrock systemd[1]: Starting Socket activation for snappy daemon.
Jul 2 19:00:36 asrock systemd[1]: Listening on Socket activation for snappy daemon.
Jul 2 19:00:36 asrock systemd[1]: Starting Wait until snapd is fully seeded...
Jul 2 19:00:36 asrock systemd[1]: Starting Snappy daemon...
Jul 2 19:00:36 asrock systemd[1]: Listening on Socket activation for snappy daemon.
Jul 2 19:00:36 asrock snapd[4597]: AppArmor status: apparmor is enabled and all features are available
Jul 2 19:00:36 asrock snapd[4597]: helpers.go:771: cannot retrieve info for snap "gnome-calculator": cannot find installed snap "gnome-calc
ulator" at revision 406: missing file /snap/gnome-calculator/406/meta/snap.yaml
Jul 2 19:00:37 asrock kernel: [ 383.884344] audit: type=1400 audit(1562061637.392:33): apparmor="STATUS" operation="profile_replace" info=
"same as current profile, skipping" profile="unconfined" name="/snap/core/6673/usr/lib/snapd/snap-confine" pid=4630 comm="apparmor_parser"
Jul 2 19:00:37 asrock kernel: [ 383.884350] audit: type=1400 audit(1562061637.392:34): apparmor="STATUS" operation="profile_replace" info=
"same as current profile, skipping" profile="unconfined" name="/snap/core/6673/usr/lib/snapd/snap-confine//mount-namespace-capture-helper" p
id=4630 comm="apparmor_parser"
Jul 2 19:00:37 asrock kernel: [ 384.073674] audit: type=1400 audit(1562061637.580:35): apparmor="STATUS" operation="profile_replace" profi
le="unconfined" name="snap.core.hook.configure" pid=4632 comm="apparmor_parser"
Jul 2 19:00:37 asrock kernel: [ 384.078374] audit: type=1400 audit(1562061637.584:36): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="snap-update-ns.core" pid=4634 comm="apparmor_parser"
Jul 2 19:00:36 asrock snapd[4597]: helpers.go:771: cannot retrieve info for snap "gnome-calculator": cannot find installed snap "gnome-calculator" at revision 406: missing file /snap/gnome-calculator/406/meta/snap.yaml
Jul 2 19:00:37 asrock snapd[4597]: daemon.go:379: started snapd/2.39.2+18.04 (series 16; classic) ubuntu/18.04 (amd64) linux/4.18.0-25-generic.
Jul 2 19:00:37 asrock systemd[1]: Started Snappy daemon.
Jul 2 19:00:38 asrock gnome-shell[1842]: JS ERROR: Exception in callback for signal: position-changed: TypeError: this._rect is null#012getCurrentRect@resource:///org/gnome/shell/ui/keyboard.js:561:22#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_onFocusPositionChanged@resource:///org/gnome/shell/ui/keyboard.js:643:20#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012_setCurrentWindow/this._currentWindowPositionId<@resource:///org/gnome/shell/ui/keyboard.js:535:21
Jul 2 19:01:21 asrock systemd[1]: Starting Stop ureadahead data collection...
Jul 2 19:01:21 asrock systemd[1]: Started Stop ureadahead data collection.
Jul 2 19:02:15 asrock systemd[1676]: Stopping D-Bus User Message Bus...
Jul 2 19:02:15 asrock gdm3: Tried to look up non-existent conversation gdm-launch-environment
Jul 2 19:03:30 asrock kernel: [ 0.000000] Linux version 4.18.0-25-generic (buildd@lgw01-amd64-033) (gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #26~18.04.1-Ubuntu SMP Thu Jun 27 07:28:31 UTC 2019 (Ubuntu 4.18.0-25.26~18.04.1-generic 4.18.20)
Jul 2 19:03:30 asrock kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-25-generic root=UUID=d72f205e-c63c-4fe9-86ca-9006d361d0ed ro ipv6.disable=1 quiet splash ipv6.disable=1 vt.handoff=1
Jul 2 19:03:30 asrock kernel: [ 0.000000] KERNEL supported cpus:
Jul 2 19:03:30 asrock kernel: [ 0.000000] Intel GenuineIntel
Jul 2 19:03:30 asrock kernel: [ 0.000000] AMD AuthenticAMD