[youko.com]: ERROR: Youku server reported error -6004: 客户端无权播放,201

[soga30]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.04.24
• 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

youtube-dl.exe https://v.youku.com/v_show/id_XMTI1Mzk3ODE0MA==.html --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://v.youku.com/v_show/id_XMTI1Mzk3ODE0MA==.html', '--verbose']
[debug] Encodings: locale cp950, fs mbcs, out cp950, pref cp950
[debug] youtube-dl version 2019.04.24
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.17134
[debug] exe versions: none
[debug] Proxy map: {}
[youku] XMTI1Mzk3ODE0MA: Retrieving cna info
[youku] XMTI1Mzk3ODE0MA: Downloading JSON metadata
ERROR: Youku server reported error -6004: 客户端无权播放,201; 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.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmp1l3rbf78\build\youtube_dl\YoutubeDL.py", line 796, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmp1l3rbf78\build\youtube_dl\extractor\common.py", line 529, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmp1l3rbf78\build\youtube_dl\extractor\youku.py", line 189, in _real_extract
youtube_dl.utils.ExtractorError: Youku server reported error -6004: 客户端无权播放,201; 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.

Description

I am trying to download a set of 50 videos from youku. 48 work fine but the one from the example and https://v.youku.com/v_show/id_XMTI1Mzk3NzQyOA==.html fail with the same error. Similar errors have been reported in 2017 and 2018 but the information from those issues was not useful for solving the download problem.