JSONDecodeError while searching on youtube

[agn-gpl]

youtube-dl version 2020.09.14-1 on Debian GNU/Linux testing

user:~$ youtube-dl "ytsearch10:Schubert D894" -ies --get-id --get-thumbnail --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['ytsearch10:Schubert D894', '-ies', '--get-id', '--get-thumbnail', '--verbose']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2020.09.14
[debug] Python version 3.8.6 (CPython) - Linux-5.8.0-3-amd64-x86_64-with-glibc2.29
[debug] exe versions: ffmpeg 4.3.1-4, ffprobe 4.3.1-4, rtmpdump 2.4
[debug] Proxy map: {}
ERROR: query "Schubert D894": Failed to parse JSON  (caused by JSONDecodeError('Expecting value: line 1 column 1 (char 0)')); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 899, in _parse_json
    return json.loads(json_string)
  File "/usr/lib/python3.8/json/__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.8/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.8/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 899, in _parse_json
    return json.loads(json_string)
  File "/usr/lib/python3.8/json/__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.8/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.8/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 3005, in _real_extract
    return self._get_n_results(query, n)
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/youtube.py", line 3200, in _get_n_results
    data = self._download_json(
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 888, in _download_json
    res = self._download_json_handle(
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 874, in _download_json_handle
    return self._parse_json(
  File "/usr/lib/python3/dist-packages/youtube_dl/extractor/common.py", line 903, in _parse_json
    raise ExtractorError(errmsg, cause=ve)
youtube_dl.utils.ExtractorError: query "Schubert D894": Failed to parse JSON  (caused by JSONDecodeError('Expecting value: line 1 column 1 (char 0)')); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.