bug#40442: srt2vtt does not work

[Leo Famulari]

On Sat, Apr 04, 2020 at 05:58:15PM -0500, sirgazil via Bug reports for GNU Guix 
wrote:
> I installed srt2vtt but it errors when I run it.
> 
> $ srt2vtt --help
> Backtrace:

Nothing to add but that I can still reproduce it on current master
branch.