NameError: name 'air_modes_swig' is not defined ,How to fix it.

[e983917]

When I run "./modes_rx -K test.kml".It appears to these.How can I fix it.
Traceback (most recent call last):
File "./modes_rx", line 98, in
main()
File "./modes_rx", line 57, in main
tb = air_modes.modes_radio(options, context)
File "/usr/lib/python3/dist-packages/air_modes/radio.py", line 55, in init
self._rx_path = air_modes.rx_path(self._rx_rate, options.threshold,
File "/usr/lib/python3/dist-packages/air_modes/rx_path.py", line 56, in init
self._sync = air_modes_swig.preamble(self._rate, self._threshold)
NameError: name 'air_modes_swig' is not defined