TypeError: cannot unpack non-iterable NoneType object

[ghost]

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Describe the bug
TypeError: cannot unpack non-iterable NoneType object

To Reproduce
autosub -i test.mp4 -er "test.times.srt" -sapi gcsv1 -skey [REDACTED] -S de-de -D en

• Command line arguments you are using.Use the following markdown code block syntax is recommended. Copy them into the place between ```.

-sapi gcsv1 -S de-de -D en

I've also tried with -S auto, -sapi gsv2, I've tried not using -er and letting it figure out the regions on its own, it always does the same thing.

• A complete copy of command line output of the autosub. You can use Ctrl-A and Ctrl-C to copy all of them.

autosub -i test.mp4 -er "test.times.srt" -sapi gcsv1 -skey [REDACTED] -S de-de -D en
Use external speech regions.
C:\Program Files\ImageMagick-7.0.10-Q16\ffmpeg.exe -hide_banner -y -i "test.mp4" -vn -ac 1 -ar 16000 -loglevel error "C:\Users\REALDR~1\AppData\Local\Temp\tmpagfbmzk5.wav"

Converting speech regions to short-term fragments.
Converting: 100% |####################################################| Time:  0:00:04 Use the API key given in the option "-skey"/"--speech-key".

Sending short-term fragments to Google Cloud Speech V1P1Beta1 API and getting result.
Speech-to-Text: 100% |################################################| Time:  0:00:34 Traceback (most recent call last):
  File "autosub\__main__.py", line 25, in <module>
  File "autosub\__init__.py", line 159, in main
  File "autosub\cmdline_utils.py", line 1369, in audio_or_video_prcs
TypeError: cannot unpack non-iterable NoneType object
[14460] Failed to execute script __main__

• If a config file is used, attach the config file, but be sure to remove any information related to your accounts.

Use this to display your config.

• etc.

Expected behavior
A clear and concise description of what you expected to happen.
Transcribe and translate subtitles.

Screenshots
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Environment (please complete the following information):

• OS: [e.g. windows] Windows 10
• Python Version: [e.g. Python 3.7] Python 3.8.3
• Autosub Version: [e.g. 0.4.1-alpha/0.5.4-alpha Nuitka windows release] 0.5.7-alpha

Additional context (Optional)
Add any other context about the problem here.

[BingLingGroup]

Commit 0768a5a should fix this. Install the lastest dev version and try again.