ffsubsync: ffmpeg._run.Error: ffprobe error

While trying to run the program in Arch Linux 64 bit I see this error :

INFO:subsync.subsync:computing alignments...
INFO:subsync.speech_transformers:extracting speech segments from subtitles...
Traceback (most recent call last):
  File "/home/nirjhor/.local/bin/subsync", line 11, in <module>
    load_entry_point('subsync==0.2.10', 'console_scripts', 'subsync')()
  File "/home/nirjhor/.local/lib/python3.7/site-packages/subsync/subsync.py", line 74, in main
    reference_pipe.fit_transform(args.reference)
  File "/home/nirjhor/.local/lib/python3.7/site-packages/sklearn/pipeline.py", line 393, in fit_transform
    return last_step.fit_transform(Xt, y, **fit_params)
  File "/home/nirjhor/.local/lib/python3.7/site-packages/sklearn/base.py", line 553, in fit_transform
    return self.fit(X, **fit_params).transform(X)
  File "/home/nirjhor/.local/lib/python3.7/site-packages/subsync/speech_transformers.py", line 54, in fit
    total_duration = float(ffmpeg.probe(fname)['format']['duration']) - self.start_seconds
  File "/home/nirjhor/.local/lib/python3.7/site-packages/ffmpeg/_probe.py", line 23, in probe
    raise Error('ffprobe', out, err)
ffmpeg._run.Error: ffprobe error (see stderr output for detail)

What I tried:

• Installing as user in pip

• reinstalling subsync

• tried with --encoding utf-8 & utf-16

What I expect to happen:

The program should run

What happens:

I see the above-mentioned error