Traceback (most recent call last):


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/page.py", line 1507, in click

await frame.click(selector, options, **kwargs)


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/frame_manager.py", line 567, in click

handle = await self.J(selector)


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/frame_manager.py", line 302, in querySelector

document = await self._document()


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/frame_manager.py", line 312, in _document

document = (await context.evaluateHandle('document')).asElement()


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/execution_context.py", line 89, in evaluateHandle

_rewriteError(e)


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/execution_context.py", line 239, in _rewriteError

raise error


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/execution_context.py", line 81, in evaluateHandle

_obj = await self._client.send('Runtime.evaluate', {


 "/home/kabakov/miniconda3/envs/py37/lib/python3.8/site-packages/pyppeteer/connection.py", line 217, in send

raise NetworkError(
pyppeteer.errors.NetworkError: Protocol Error (Runtime.evaluate): Session closed. Most likely the page has been closed.

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

 "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 617, in _decrypt_signature
video_id, player_url, s

 "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 531, in _extract_signature_function
res = self._parse_sig_js(code)

 "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 592, in _parse_sig_js
'Initial JS player signature function name')

 "/usr/bin/youtube-dl/youtube_dl/extractor/common.py", line 516, in _search_regex
raise RegexNotFoundError('Unable to extract %s' % _name)RegexNotFoundError: Unable to extract Initial JS player signature function name; 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.