Unable to extract al:web:url

[kelargo]

Checklist

• [x ] I'm reporting a broken site support issue
• [x ] I've verified that I'm running youtube-dl version 2019.08.13
• [x ] I've checked that all provided URLs are alive and playable in a browser
• [x ] I've checked that all URLs and arguments with special characters are properly quoted or escaped
• [x ] I've searched the bugtracker for similar bug reports including closed ones
• [x ] I've read bugs section in FAQ

Verbose log

$ youtube-dl --version
2019.08.13

$ youtube-dl https://www.funimation.com/shows/yu-yu-hakusho/surprised-to-be-dead/ --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'https://www.funimation.com/shows/yu-yu-hakusho/surprised-to-be-dead/', u'--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.08.13
[debug] Python version 2.7.16 (CPython) - Linux-5.2.10-050210-lowlatency-x86_64-with-Ubuntu-19.04-disco
[debug] exe versions: ffmpeg 4.1.3, ffprobe 4.1.3
[debug] Proxy map: {}
[Funimation] surprised-to-be-dead: Downloading webpage
WARNING: [Funimation] surprised-to-be-dead: Failed to parse JSON No JSON object could be decoded
ERROR: Unable to extract al:web:url; 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 "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/funimation.py", line 100, in _real_extract
    ], webpage, fatal=True)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 1135, in _html_search_meta
    html, display_name, fatal=fatal, group='content', **kwargs)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 1014, in _html_search_regex
    res = self._search_regex(pattern, string, name, default, fatal, flags, group)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 1005, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract al:web:url; 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

Seems like the regex module is not able to find the url to obtain the video.
Unable to extract al:web:url in regex search

curl shows
curl https://www.funimation.com/shows/yu-yu-hakusho/surprised-to-be-dead/

<iframe id="main-iframe" src="/_Incapsula_Resource?SWUDNSAI=29&xinfo=14-4805681-0%200NNN%20RT%281566918646012%200%29%20q%280%20-1%20-1%20-1%29%20r%280%20-1%29%20B12%284%2c316%2c0%29%20U18&incident_id=1229000310002827699-14894688965034494&edet=12&cinfo=04000000" frameborder=0 width="100%" height="100%" marginheight="0px" marginwidth="0px">Request unsuccessful. Incapsula incident ID: 1229000310002827699-14894688965034494</iframe>

[kelargo]

What is it a duplicate of?