GLibDBusProxy.cpp:487 Calling method "SyncOne"

[themusicgod1]

starting may 15 (at least 1 restart ago), syslog is filled with warning messages

"May 17 20:39:57 eva compiz[1791]: WARN 2017-05-17 20:39:57 unity.glib.dbus.proxy GLibDBusProxy.cpp:487 Calling method "SyncOne" on object path: "/com/canonical/Unity/Panel/Service" failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.Unity.Panel.Service.LockScreen was not provided by any .service files"

compiz : 1:0.9.13.1+17.04.20170109-0ubuntu1
unity : 7.5.0+17.04.20170407.1-0ubuntu1
dbus : 1.10.10-1ubuntu2
ubuntu : 17.04 zesty
Linux eva1 4.10.0-20-generic #22-Ubuntu SMP Thu Apr 20 09:22:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

the first instance was after the screen was locked:

May 15 22:42:32 eva systemd[1266]: Starting Backing Service for the Unity Panel
in Lockscreen mode...
May 15 22:42:32 eva systemd[1266]: Started Backing Service for the Unity Panel i
n Lockscreen mode.
May 15 22:42:32 eva systemd[1266]: Reached target A target that, when running, r
epresents the screen being locked.
May 15 22:42:45 eva compiz[1703]: WARN 2017-05-15 22:42:45 unity.glib.dbus.proxy GLibDBusProxy.cpp:487 Calling method "SyncOne" on object path: "/com/canonical/Unity/Panel/Service" failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.Unity.Panel.Service.LockScreen was not provided by a:
...

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity:Unity7
Date: Thu May 18 12:19:56 2017
DistUpgraded: Fresh install
DistroCodename: zesty
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Device [8086:5912] (rev 04) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7994]
GsettingsChanges: b'org.compiz.core' b'active-plugins' b"['core', 'composite', 'opengl', 'move', 'regex', 'compiztoolbox', 'commands', 'place', 'wall', 'resize', 'grid', 'mousepoll', 'imgpng', 'vpswitch', 'animation', 'snap', 'unitymtgrabhandles', 'copytex', 'workarounds', 'fade', 'session', 'scale', 'expo', 'ezoom', 'unityshell']"
InstallationDate: Installed on 2017-04-18 (29 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
MachineType: MSI MS-7994
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic.efi.signed root=UUID=333c5e4f-3f61-4abf-b950-f19431c843d6 ro quiet splash vt.handoff=7
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/16/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.80
dmi.board.asset.tag: Default string
dmi.board.name: H110M GAMING (MS-7994)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.80:bd12/16/2016:svnMSI:pnMS-7994:pvr1.0:rvnMSI:rnH110MGAMING(MS-7994):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7994
dmi.product.version: 1.0
dmi.sys.vendor: MSI
version.compiz: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.76-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.3-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.3-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.3-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.9.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.14-0ubuntu1
xserver.bootTime: Wed May 17 08:23:10 2017
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.3-1ubuntu1
xserver.video_driver: modeset