Vimeo: Unable to download subtitle for "es"

[inklesspen]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.03.24
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', '--all-subs', '--skip-download', 'https://vimeo.com/399911700']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.03.24
[debug] Python version 3.7.4 (CPython) - Darwin-19.3.0-x86_64-i386-64bit
[debug] exe versions: avconv 12.3, avprobe 12.3, ffmpeg 4.2.2, ffprobe 4.2.2, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[vimeo] 399911700: Downloading webpage
[vimeo] 399911700: Extracting information
[vimeo] 399911700: Downloading JSON metadata
[vimeo] 399911700: Downloading JSON metadata
WARNING: Unable to download JSON metadata: HTTP Error 403: Forbidden
[vimeo] 399911700: Downloading akfire_interconnect_quic m3u8 information
[vimeo] 399911700: Downloading fastly_skyfire m3u8 information
[vimeo] 399911700: Downloading akfire_interconnect_quic MPD information
[vimeo] 399911700: Downloading fastly_skyfire MPD information
[debug] Default format spec: bestvideo+bestaudio/best
[info] Writing video subtitles to: Objectified-399911700.en.vtt
[info] Writing video subtitles to: Objectified-399911700.es.vtt
WARNING: Unable to download subtitle for "es": Unable to download webpage: HTTP Error 404: Not Found (caused by <HTTPError 404: 'Not Found'>); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
[info] Writing video subtitles to: Objectified-399911700.fr.vtt
[info] Writing video subtitles to: Objectified-399911700.pt-BR.vtt

Description

Note: this video is expected to only be live until March 31st.
The documentary Objectified is currently being shown on Vimeo: https://vimeo.com/399911700
I wanted to download the subtitles, so I ran the command shown in the log. It worked for three of the four subtitle languages, but the Spanish subtitles got a 404.

[inklesspen]

Nevermind; the subtitle itself is broken on Vimeo despite initially appearing to work.