[Nexx] site support broken

[maxemann96]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.11.05 (also verified on latest commit 2e9ad59)
• 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: [u'-v', u'https://embed.nexx.cloud/11888/video/DSRTO7UVOX06S7']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.11.05
[debug] Python version 2.7.16 (CPython) - Darwin-19.0.0-x86_64-i386-64bit
[debug] exe versions: none
[debug] Proxy map: {}
[NexxEmbed] video: Downloading webpage
Traceback (most recent call last):
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/local/bin/youtube-dl/__main__.py", line 19, in <module>
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 474, in main
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 464, in _real_main
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2018, in download
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/nexx.py", line 451, in _real_extract
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/nexx.py", line 138, in _extract_url
IndexError: list index out of range

Description

No additional info provided, tried this video and got a IndexError: list index out of range.
This can be related to #22666 since there was also a list issue, but i dont know.