PornFlip -- UnsupportedError: Unsupported URL

[miletece]

$ youtube-dl --version
2018.03.14

$ youtube-dl -v https://www.pornflip.com/v/NG9q6Pb_iK8
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://www.pornflip.com/v/NG9q6Pb_iK8']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.03.14
[debug] Python version 2.7.12 (CPython) - Linux-4.13.0-38-generic-x86_64-with-LinuxMint-18.3-sylvia
[debug] exe versions: ffmpeg 2.8.14-0ubuntu0.16.04.1, ffprobe 2.8.14-0ubuntu0.16.04.1
[debug] Proxy map: {}
[generic] NG9q6Pb_iK8: Requesting header
WARNING: Falling back on generic information extractor.
[generic] NG9q6Pb_iK8: Downloading webpage
[generic] NG9q6Pb_iK8: Extracting information
[generic] NG9q6Pb_iK8: Downloading MPD manifest
WARNING: Failed to download MPD manifest: HTTP Error 404: Not Found
ERROR: Unsupported URL: https://www.pornflip.com/v/NG9q6Pb_iK8
Traceback (most recent call last):
File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/extractor/generic.py", line 2222, in _real_extract
doc = compat_etree_fromstring(webpage.encode('utf-8'))
File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/compat.py", line 2542, in compat_etree_fromstring
doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/compat.py", line 2531, in _XML
parser.feed(text)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1653, in feed
self._raiseerror(v)
File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1517, in _raiseerror
raise err
ParseError: mismatched tag: line 21, column 2
Traceback (most recent call last):
File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 785, in extract_info
ie_result = ie.extract(url)
File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 440, in extract
ie_result = self._real_extract(url)
File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/extractor/generic.py", line 3151, in _real_extract
raise UnsupportedError(url)
UnsupportedError: Unsupported URL: https://www.pornflip.com/v/NG9q6Pb_iK8