When I try to run scope after running the env command this is what i get-what am i doing wrong?

root@kali:~# cd pybombs
root@kali:~/pybombs# ./pybombs env -v
Settled on prefix: /root/target
Initializing environmental variables...
Loading recipes ...
Writing out env...:
PyBombs.sysutils - INFO - To set up your environment (in bash) run: "source /root/target/setup_env.sh"
root@kali:~/pybombs# source /root/target/setup_env.sh
root@kali:~/pybombs# cd src
root@kali:~/pybombs/src# cd gr-op25
root@kali:~/pybombs/src/gr-op25# cd op25
root@kali:~/pybombs/src/gr-op25/op25# cd gr-op25_repeater
root@kali:~/pybombs/src/gr-op25/op25/gr-op25_repeater# cd apps
root@kali:~/pybombs/src/gr-op25/op25/gr-op25_repeater/apps# ./scope.py
linux; GNU C++ version 4.9.2; Boost_105500; UHD_003.010.git-119-g42a3eeb6

gr-osmosdr v0.1.4-67-gac15e789 (0.1.5git) gnuradio 3.7.10git-47-gbd69c31e
built-in source types: file osmosdr fcd rtl rtl_tcp uhd hackrf bladerf rfspace airspy redpitaya

FATAL: No supported devices found to pick from.

Trying to fill up 1 missing channel(s) with null source(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.

Traceback (most recent call last):
  File "./scope.py", line 2751, in <module>
    app = stdgui2.stdapp(p25_rx_block, "APCO P25 Receiver", 3)
  File "/root/target/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 46, in __init__
    wx.App.__init__ (self, redirect=False)
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 8628, in __init__
    self._BootstrapApp()
  File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_core.py", line 8196, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File "/root/target/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", line 49, in OnInit