ERROR: Signature extraction failed: Traceback (most recent call last):


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\extractor\youtube.py", line 1426, in _decrypt_signature


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\extractor\youtube.py", line 1338, in _extract_signature_function


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\extractor\youtube.py", line 1402, in <lambda>


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\jsinterp.py", line 258, in resf


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\jsinterp.py", line 56, in interpret_statement


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\jsinterp.py", line 92, in interpret_expression


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\jsinterp.py", line 189, in interpret_expression


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\jsinterp.py", line 56, in interpret_statement


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpspbsbtmq\build\youtube_dl\jsinterp.py", line 211, in interpret_expression
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; 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):


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract

ie_result = self._real_extract(url)


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/linkedin.py", line 158, in _real_extract

course_data = self._call_api(course_slug, 'chapters,description,title')


 "/usr/local/bin/youtube-dl/youtube_dl/extractor/linkedin.py", line 36, in _call_api

'Csrf-Token': self._get_cookies(api_url)['JSESSIONID'].value,
KeyError: 'JSESSIONID'
