Traceback (most recent call last):

 "/usr/lib/python2.7/logging/__init__.py", line 869, in emit
stream.write(fs % msg.encode("UTF-8"))UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 76: ordinal not in range(128)
WARNING: Automatic signature extraction failed: Traceback (most recent call last):

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
video_id, player_url, len(s)

 "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
player_type = id_m.group('ext')AttributeError: 'NoneType' object has no attribute 'group'