Cannot Get GUI to open

Here are is the output from the install. I did remove a bunch of the install lines to conserve space. If you need them let me know please.

[email protected]:~$ lsb_release -a
LSB Version:	core-9.20170808ubuntu1-noarch:printing-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.4 LTS
Release:	18.04
Codename:	bionic
[email protected]:~$ uname -m
x86_64
[email protected]:~$ sudo dpkg -i ~/Downloads/prey_1.9.3_amd64.deb
Selecting previously unselected package prey.
(Reading database ... 252440 files and directories currently installed.)
Preparing to unpack .../Downloads/prey_1.9.3_amd64.deb ...
Unpacking prey (1.9.3) ...
Setting up prey (1.9.3) ...
Creating user prey...
Creating a user called prey

... Skipping a bunch of install lines here

Setting permissions on /etc/prey
chowning /etc/prey to uid 999 and gid 999
Setting permissions on /var/log/prey.log
chowning /var/log/prey.log to uid 999 and gid 999
Running "config activate" as prey
--
Ensuring presence of config dir: /etc/prey
Syncing /etc/prey/prey.conf with /usr/lib/prey/versions/1.9.3/prey.conf.default
Setting up this as current...
No version is set as current.
Setting permissions on /usr/lib/prey/current
Running post_activate hooks...
Voila! All good.
--
Installing init scripts.
Sweet! Please run `prey config panel` or `prey config gui` to link your device.
Voila! All good.
No protocol specified
xhost:  unable to open display ":0.0"
Firing up config GUI!
[email protected]:~$ prey config panel

Command 'prey' not found, did you mean:

  command 'pry' from deb pry
  command 'preg' from deb emboss
  command 'prep' from deb loki
  command 'prev' from deb mailutils-mh
  command 'prev' from deb mmh
  command 'prev' from deb nmh

Try: sudo apt install <deb name>

[email protected]:~$ prey config gui

Command 'prey' not found, did you mean:

  command 'prep' from deb loki
  command 'pry' from deb pry
  command 'prev' from deb mailutils-mh
  command 'prev' from deb mmh
  command 'prev' from deb nmh
  command 'preg' from deb emboss

Try: sudo apt install <deb name>

[email protected]:~$ sudo !!
sudo prey config gui
sudo: prey: command not found
[email protected]:~$ sudo /usr/lib/prey/current/bin/prey config gui -f
Firing up config GUI!
[email protected]:~$ sudo /usr/lib/prey/current/bin/prey config panel -f
Firing up config GUI!
[email protected]:~$ man prey
No manual entry for prey

No GUI shows up even when it says “Firing up GUI!” What do I need to look for next to be able to move forward with connecting this device to my account?