youtube-dl: Funimation fails to parse JSON

Checklist

• I’m reporting a broken site support
• I’ve verified that I’m running youtube-dl version 2021.04.26
• 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', 'https://www.funimation.com/shows/talentless-nana/healing/']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.04.26
[debug] Python version 3.9.4 (CPython) - Linux-4.4.0-19041-Microsoft-x86_64-with-glibc2.31
[debug] exe versions: ffmpeg 4.2.4, ffprobe 4.2.4, rtmpdump 2.4
[debug] Proxy map: {}
[Funimation] healing: Downloading webpage
WARNING: [Funimation] healing: Failed to parse JSON Expecting value: line 1 column 1 (char 0)
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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/YoutubeDL.py", line 806, in wrapper
    return func(self, *args, **kwargs)
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/YoutubeDL.py", line 827, in __extract_info
    ie_result = ie.extract(url)
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/extractor/common.py", line 534, in extract
    ie_result = self._real_extract(url)
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/extractor/funimation.py", line 96, in _real_extract
    player_url = self._html_search_meta([
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/extractor/common.py", line 1140, in _html_search_meta
    return self._html_search_regex(
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/extractor/common.py", line 1021, in _html_search_regex
    res = self._search_regex(pattern, string, name, default, fatal, flags, group)
  File "/home/linuxbrew/.linuxbrew/opt/python@3.9/lib/python3.9/site-packages/youtube_dl/extractor/common.py", line 1012, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
youtube_dl.utils.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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

Description

Funimation extractor fails to parse JSON.