Gr_satellites runtime errors

Having installed gr_satellites and wanting to carry out test runs using sample files, I receive this error message below.
There appears to be no .wav sample files in /satellite-recordings. Are they elsewhere? Not that I can find them. Is it a corrupt installation, or ??
As I’m loathe to start ‘messing’ with the code, I would appreciate receiving comment/advice please?

gr_satellites FUNcube-1 --wavfile satellite-recordings/ao73.wav
satellite-recordings/ao73.wav: No such file or directory
Traceback (most recent call last):
File “/usr/local/bin/gr_satellites”, line 316, in
File “/usr/local/bin/gr_satellites”, line 301, in main
tb = gr_satellites_top_block(parser)
File “/usr/local/bin/gr_satellites”, line 179, in init
File “/usr/local/bin/gr_satellites”, line 213, in setup_input
return self.setup_wavfile_input()
File “/usr/local/bin/gr_satellites”, line 229, in setup_wavfile_input
File “/usr/lib/python3/dist-packages/gnuradio/blocks/”, line 454, in make
return _blocks_swig1.wavfile_source_make(filename, repeat)
RuntimeError: can’t open file

Look at Installing from source — gr-satellites 4.7.0-git documentation