Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/usbcreator/frontends/gtk/frontend.py", line 563, in add_file_source_dialog
    self.backend.add_image(filename)
  File "/usr/lib/python3/dist-packages/usbcreator/backends/base/backend.py", line 42, in add_image
    label = self._is_casper_cd(filename)
  File "/usr/lib/python3/dist-packages/usbcreator/backends/udisks/backend.py", line 151, in _is_casper_cd
    output = misc.popen(cmd, stderr=None)
  File "/usr/lib/python3/dist-packages/usbcreator/misc.py", line 117, in popen
    process = subprocess.Popen(cmd, stdout=stdout, stderr=stderr, stdin=stdin,
  File "/usr/lib/python3.9/subprocess.py", line 951, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.9/subprocess.py", line 1823, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'isoinfo'