Tails

The whisterback application fails to open after launching from the application menu.

When running whisperback from the console, I get this eror:
amnesiaamnesia:~$ whisperback
/dev/mapper/control: open failed: No such device
Failure to communicate with kernel device-mapper driver.
Check that device-mapper is available in the kernel.
Incompatible libdevmapper 1.02.137 (2016-11-30) and kernel driver (unknown version).
Command failed
Traceback (most recent call last):
File “/usr/local/sbin/tails-debugging-info”, line 160, in
main()
File “/usr/local/sbin/tails-debugging-info”, line 70, in main
info.append(debug_command(_args[‘args’][0], *_args[‘args’][1:]))
File “/usr/local/sbin/tails-debugging-info”, line 85, in debug_command
command_output = subprocess.check_output([command, *args])
File “/usr/lib/python3.5/subprocess.py”, line 316, in check_output
**kwargs).stdout
File “/usr/lib/python3.5/subprocess.py”, line 398, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command ‘[’/sbin/dmsetup’, ‘ls’, ‘—tree’, ‘—options=blkdevname,uuid,active,open,rw,notrunc’]’ returned non-zero exit status 1
Traceback (most recent call last):
File “/usr/bin/whisperback”, line 34, in
ui = whisperBack.WhisperBackUI()
File “/usr/lib/python3/dist-packages/whisperBack/gui.py”, line 127, in init
self.backend = whisperBack.whisperback.WhisperBack()
File “/usr/lib/python3/dist-packages/whisperBack/whisperback.py”, line 120, in init
self.appended_data = self.__get_debug_info(self.mail_appended_info())
File “/usr/lib/python3/dist-packages/whisperBack/whisperback.py”, line 157, in __get_debug_info
all_info = json.loads(raw_debug)
File “/usr/lib/python3.5/json/init.py”, line 319, in loads
return _default_decoder.decode(s)
File “/usr/lib/python3.5/json/decoder.py”, line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “/usr/lib/python3.5/json/decoder.py”, line 357, in raw_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)@