N-TV download broken

[lopezio]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2019.05.20
• 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 bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

youtube-dl --verbose 'https://www.n-tv.de/mediathek/videos/wirtschaft/Zetsche-verlaesst-den-Stern-article21039802.html'
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'https://www.n-tv.de/mediathek/videos/wirtschaft/Zetsche-verlaesst-den-Stern-article21039802.html']
[debug] Encodings: locale US-ASCII, fs US-ASCII, out US-ASCII, pref US-ASCII
[debug] youtube-dl version 2019.05.20
[debug] Python version 2.7.15 (CPython) - FreeBSD-11.2-RELEASE-amd64-64bit-ELF
[debug] exe versions: ffmpeg 4.0.2, ffprobe 4.0.2
[debug] Proxy map: {}
[n-tv.de] 21039802: Downloading webpage
ERROR: Unable to extract info; 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 "/usr/local/lib/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 529, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/ntvde.py", line 40, in _real_extract
    r'(?s)ntv\.pageInfo\.article\s*=\s*(\{.*?\});', webpage, 'info'),
  File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 1004, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract info; 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

N-TV downloading seems to be broken, at least for the above video.