entering 'ubuntu-bug xorg' produced an error

[Springnuts]

trying to debug mouse detection, followed direction in this page - https://wiki.ubuntu.com/DebuggingMouseDetection - to enter "ubuntu-bug xorg" in a terminal, and got an error message. see attached screenshot.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Fri Apr 29 07:49:39 2016
DistUpgraded: 2016-04-22 10:54:46,152 DEBUG icon theme changed, re-reading
DistroCodename: xenial
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 5.0.18, 4.2.0-35-generic, x86_64: installed
 virtualbox, 5.0.18, 4.4.0-21-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R5 Graphics] [1002:1318] (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Kaveri [Radeon R5 Graphics] [103c:2234]
InstallationDate: Installed on 2016-02-26 (62 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Hewlett-Packard HP ProBook 455 G2
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=5a2f8d42-b289-4e3a-9f62-144505e6ec2f ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to xenial on 2016-04-22 (6 days ago)
dmi.bios.date: 07/22/2015
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: M75 Ver. 01.31
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 2235
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 66.20
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrM75Ver.01.31:bd07/22/2015:svnHewlett-Packard:pnHPProBook455G2:pvrA3009DD10303:rvnHewlett-Packard:rn2235:rvrKBCVersion66.20:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 455 G2
dmi.product.version: A3009DD10303
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.12.2+16.04.20160415-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Fri Apr 29 07:43:12 2016
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.18.3-1ubuntu2
xserver.video_driver: radeon