Repository: youtube-dl
Issue: Nick.de extractor: Unable to extract mrss url
Labels: duplicate

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## Checklist

<!--
Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.06.06. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
- Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
- Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
- Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
- Finally, put x into all relevant boxes (like this [x])
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- [x] I'm reporting a broken site support
- [x] I've verified that I'm running youtube-dl version **2021.06.06**
- [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 issues including closed ones


## Verbose log

<!--
Provide the complete verbose output of youtube-dl that clearly demonstrates the problem.
Add the `-v` flag to your command line you run youtube-dl with (`youtube-dl -v <your command line>`), copy the WHOLE output and insert it below. It should look similar to this:
 [debug] System config: []
 [debug] User config: []
 [debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
 [debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
 [debug] youtube-dl version 2021.06.06
 [debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
 [debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
 [debug] Proxy map: {}
 <more lines>
-->

```
youtube-dl --verbose "https://www.nick.de/episodes/82rjmk/henry-danger-die-budgetkuerzung-staffel-4-ep-24"
[debug] System config: ['-c', '-i']
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://www.nick.de/episodes/82rjmk/henry-danger-die-budgetkuerzung-staffel-4-ep-24']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.9.2 (CPython) - Linux-5.10.0-kali9-amd64-x86_64-with-glibc2.31
[debug] exe versions: ffmpeg 4.3.2-0, ffprobe 4.3.2-0
[debug] Proxy map: {}
[nick.de] henry-danger-die-budgetkuerzung-staffel-4-ep-24: Downloading webpage
ERROR: Unable to extract mrss 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/devemperor/.local/lib/python3.9/site-packages/youtube_dl/YoutubeDL.py", line 815, in wrapper
    return func(self, *args, **kwargs)
  File "/home/devemperor/.local/lib/python3.9/site-packages/youtube_dl/YoutubeDL.py", line 836, in __extract_info
    ie_result = ie.extract(url)
  File "/home/devemperor/.local/lib/python3.9/site-packages/youtube_dl/extractor/common.py", line 534, in extract
    ie_result = self._real_extract(url)
  File "/home/devemperor/.local/lib/python3.9/site-packages/youtube_dl/extractor/nick.py", line 191, in _real_extract
    mrss_url = self._extract_mrss_url(webpage, host)
  File "/home/devemperor/.local/lib/python3.9/site-packages/youtube_dl/extractor/nick.py", line 180, in _extract_mrss_url
    return update_url_query(self._search_regex(
  File "/home/devemperor/.local/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 mrss 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.
```