la7.tv download till not working

[cgand]

As in #23323

$ youtube-dl --verbose https://www.la7.it/propagandalive/rivedila7/propaganda-live-puntata-del-31012020-01-02-2020-305245
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://www.la7.it/propagandalive/rivedila7/propaganda-live-puntata-del-31012020-01-02-2020-305245']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.01.24
[debug] Python version 3.7.6 (CPython) - Darwin-18.7.0-x86_64-i386-64bit
[debug] exe versions: none
[debug] Proxy map: {}
[la7.it] propaganda-live-puntata-del-31012020-01-02-2020-305245: Downloading webpage
ERROR: propaganda-live-puntata-del-31012020-01-02-2020-305245: Failed to parse JSON  (caused by JSONDecodeError('Expecting value: line 4 column 32 (char 497)')); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  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/bin/youtube-dl/youtube_dl/extractor/common.py", line 899, in _parse_json
    return json.loads(json_string)
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 4 column 32 (char 497)
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 899, in _parse_json
    return json.loads(json_string)
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 4 column 32 (char 497)

During handling of the above exception, another exception occurred:

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/la7.py", line 55, in _real_extract
    video_id, transform_source=js_to_json)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 903, in _parse_json
    raise ExtractorError(errmsg, cause=ve)
youtube_dl.utils.ExtractorError: propaganda-live-puntata-del-31012020-01-02-2020-305245: Failed to parse JSON  (caused by JSONDecodeError('Expecting value: line 4 column 32 (char 497)')); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

$ youtube-dl -U
youtube-dl is up-to-date (2020.01.24)