La7 italian television support does not work anymore

[evoblue]

downloading videos from thsi source sued to work and now no more. I'm using an updated version of the software.
Italian television site with many videos: https://www.la7.it/tagada/rivedila7/

Output diagnistic:

./youtube-dl --verbose https://www.la7.it/tagada/rivedila7/tagada-05-12-2019-297031
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'https://www.la7.it/tagada/rivedila7/tagada-05-12-2019-297031']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.11.28
[debug] Python version 2.7.15+ (CPython) - Linux-4.15.0-72-generic-x86_64-with-Ubuntu-18.04-bionic
[debug] exe versions: ffmpeg 3.4.6, ffprobe 3.4.6, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[la7.it] tagada-05-12-2019-297031: Downloading webpage
ERROR: tagada-05-12-2019-297031: Failed to parse JSON (caused by ValueError('No JSON object could be decoded',)); 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 "./youtube-dl/youtube_dl/extractor/common.py", line 899, in _parse_json
return json.loads(json_string)
File "/usr/lib/python2.7/json/init.py", line 339, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
Traceback (most recent call last):
File "./youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info
ie_result = ie.extract(url)
File "./youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
ie_result = self._real_extract(url)
File "./youtube-dl/youtube_dl/extractor/la7.py", line 55, in _real_extract
video_id, transform_source=js_to_json)
File "./youtube-dl/youtube_dl/extractor/common.py", line 903, in _parse_json
raise ExtractorError(errmsg, cause=ve)
ExtractorError: tagada-05-12-2019-297031: Failed to parse JSON (caused by ValueError('No JSON object could be decoded',)); 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.