Dumpert.nl broken after redesign

[Niek]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.09.12.1
• 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

# youtube-dl -v https://www.dumpert.nl/item/7756131_98154132
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://www.dumpert.nl/item/7756131_98154132']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.09.12.1
[debug] Python version 2.7.16 (CPython) - Linux-4.18.0-18-generic-x86_64-with-Ubuntu-18.10-cosmic
[debug] exe versions: ffmpeg 4.0.4, ffprobe 4.0.4
[debug] Proxy map: {}
[generic] 7756131_98154132: Requesting header
[redirect] Following redirect to https://cookies.dumpert.nl/?t=https://www.dumpert.nl/item/7756131_98154132
[generic] 7756131_98154132: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 7756131_98154132: Downloading webpage
[generic] 7756131_98154132: Extracting information
ERROR: Unsupported URL: https://cookies.dumpert.nl/?t=https://www.dumpert.nl/item/7756131_98154132
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 2373, in _real_extract
    doc = compat_etree_fromstring(webpage.encode('utf-8'))
  File "/usr/local/bin/youtube-dl/youtube_dl/compat.py", line 2551, in compat_etree_fromstring
    doc = _XML(text, parser=etree.XMLParser(target=_TreeBuilder(element_factory=_element_factory)))
  File "/usr/local/bin/youtube-dl/youtube_dl/compat.py", line 2540, in _XML
    parser.feed(text)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1659, in feed
    self._raiseerror(v)
  File "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1523, in _raiseerror
    raise err
ParseError: not well-formed (invalid token): line 4, column 13
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/generic.py", line 3355, in _real_extract
    raise UnsupportedError(url)
UnsupportedError: Unsupported URL: https://cookies.dumpert.nl/?t=https://www.dumpert.nl/item/7756131_98154132

Description

The site dumpert.nl was redesigned today, breaking the extractor. The main issue seems to be that the cookie consent has changed.