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

 "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 877, in _decrypt_signature
video_id, player_url, s

 "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 792, in _extract_signature_function
res = self._parse_sig_js(code)

 "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 855, in _parse_sig_js
initial_function = jsi.extract_function(funcname)

 "/usr/local/lib/python2.7/dist-packages/youtube_dl/jsinterp.py", line 241, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)ExtractorError: Could not find JS function u'gr'; 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.
Traceback (most recent call last):


 "/usr/local/bin/bigchaindb", line 11, in <module>

load_entry_point('BigchainDB==1.0.1', 'console_scripts', 'bigchaindb')()


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/commands/bigchaindb.py", line 348, in main

utils.start(create_parser(), sys.argv[1:], globals())


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/commands/utils.py", line 204, in start

return func(args)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/commands/utils.py", line 49, in configure

command(args)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/commands/utils.py", line 76, in start_logging

command(args)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/commands/bigchaindb.py", line 199, in run_start

_run_init()


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/commands/bigchaindb.py", line 138, in _run_init

schema.init_database(connection=b.connection)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/schema.py", line 99, in init_database

create_database(connection, dbname)


 "/usr/lib/python3.5/functools.py", line 743, in wrapper

return dispatch(args[0].__class__)(*args, **kw)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/mongodb/schema.py", line 19, in create_database

if dbname in conn.conn.database_names():


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/connection.py", line 122, in conn

self.connect()


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/connection.py", line 153, in connect

self._conn = self._connect()


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/mongodb/connection.py", line 101, in _connect

self.crlfile)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/mongodb/connection.py", line 198, in initialize_replica_set

_check_replica_set(conn)


 "/usr/local/lib/python3.5/dist-packages/bigchaindb/backend/mongodb/connection.py", line 238, in _check_replica_set

raise ConfigurationError('mongod was not started with'
bigchaindb.common.exceptions.ConfigurationError: mongod was not started with the replSet option.
