issue after cancelling script on directory

[stneville]

Worked originally and still does on sub directories

/tmp # mkvstrip -b /usr/bin/mkvmerge -l eng /storage/films
Searching for MKV files to process.
Warning: This may take some time...
Traceback (most recent call last):
File "/usr/bin/mkvstrip", line 8, in
sys.exit(main())
File "/usr/lib/python3.9/site-packages/mkvstrip.py", line 57, in wrapper
func(*args, **kwargs)
File "/usr/lib/python3.9/site-packages/mkvstrip.py", line 360, in main
mkv_obj = MKVFile(mkv_file)
File "/usr/lib/python3.9/site-packages/mkvstrip.py", line 234, in init
for track_data in json__data["tracks"]:
KeyError: 'tracks'