An extractor error has occurred. (caused by KeyError(1))

[Midorina]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.06.16.1
• 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

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/lib/python3.8/dist-packages/youtube_dl/extractor/common.py", line 2995, in _real_extract
    return self._get_n_results(query, 1)
  File "/usr/local/lib/python3.8/dist-packages/youtube_dl/extractor/youtube.py", line 3180, in _get_n_results
    html_content = data[1]['body']['content']
KeyError: 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/lib/python3.8/dist-packages/youtube_dl/extractor/common.py", line 543, in extract
    raise ExtractorError('An extractor error has occurred.', cause=e)
youtube_dl.utils.ExtractorError: An extractor error has occurred. (caused by KeyError(1)); 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.

Description

After attempting to use a cookies file, this error started to raise.
If you want to reproduce this issue, simply use a cookiefile and attempt to extract_info of a video query.