Unknown username "whoopsie" in message bus configuration file (Crouton)

For some time I had this notification "Unknown username 'whoopsie' in message bus configuration file" coming up when I started my Ubuntu-server on my Chromebook via crouton. It seemed not to do anything wrong but hey, I hate to see error messages popping up on the screen and not knowing what it really means.

In my search I've learned that the user 'whoopsie'  is being used for the error reporting daemon in Ubuntu.

System Description:

Toshiba Chromebook 2:

Intel® Celeron® Processor N2840

Intel® HD Graphics

4GB DDR3 1600MHz 

16GB solid state flash memory (eMMC)

13.3" widescreen FHD TruBrite® LED Backlit Display (1920x1080)

Stereo speakers tuned by Skullcandy

Dual array microphone,HD webcam

Intel® Dual Band Wireless-AC 7260 Plus Bluetooth 4.0

Lithium Polymer (44Wh, 3-Cell) up to 9hrs

HDMI® output port

1-USB (2.0) port,1-USB (3.0) port

SD Card Reader + SanDisk Extreme Pro 64GB (95Mb/sec)

Chrome OS:

Version 46.0.2490.82 (64-bit)

Platform 7390.68.0 (Official Build) stable-channel swanky

Firmware Google_Swanky.5216.238.5

Crouton script: 

(version Oct 22-2015) 

Linux: 

Ubuntu 14.04 LTS (Unity) on SSD with all needed desktop applications / printer drivers 

Ubuntu 14.04 LTS + LAMP on SD-card (WARNING!! When running this Linux, do not go in sleep-mode, as Toshiba will automatically unmount any SD cards in sleep-mode. Some models (Acer,Acus,HP) keep the SD powered while in sleep-mode and would not cause any problems)

What worked for me to stop the Error message? 

I didn't have a need for the whoopsie service on my development system,
so I wanted to make sure it was not installed anymore.

sudo apt-get purge whoopsie libwhoopsie0

Finding the config file where the whoopsie reference came from:

cd /etc/dbus-1/system.d
find . | xargs grep 'whoopsie'

in my case that gave the result:

./org.freedesktop.NetworkManager.conf

Edit this file: (sudo nano)

/etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf

Delete the policy section for user 'whoopsie' and save.

That should do it.


NOTE:
You might want to backup the config-file first before editing.
cd /etc/dbus-1/system.d
sudo cp org.freedesktop.NetworkManager.conf  org.freedesktop.NetworkManager.conf.backup