Traceback (most recent call last):

 "site-packages\paramiko\transport.py", line 1757, in run

 "site-packages\paramiko\kex_group1.py", line 75, in parse_next

 "site-packages\paramiko\kex_group1.py", line 111, in _parse_kexdh_reply

 "site-packages\paramiko\transport.py", line 1602, in _verify_key

 "site-packages\paramiko\rsakey.py", line 58, in __init__

 "site-packages\cryptography\hazmat\backends\__init__.py", line 35, in default_backend

 "site-packages\cryptography\hazmat\backends\multibackend.py", line 33, in __init__ValueError: Multibackend cannot be initialized with no backends. If you are seeing this error when trying to use default_backend() please try uninstalling and reinstalling cryptography.
Traceback (most recent call last):


 "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 796, in extract_info

ie_result = ie.extract(url)


 "/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/youtube.py", line 2108, in _real_extract

raise ExtractorError(error_message, expected=True)
ExtractorError: This video may be inappropriate for some users.
