Traceback (most recent call last):

 "/usr/share/w3af/w3af/core/ui/gui/main.py", line 917, in _proxy_tool
ProxiedRequests(self.w3af)

 "/usr/share/w3af/w3af/core/ui/gui/tools/proxywin.py", line 158, in __init__
self.reload_options()

 "/usr/share/w3af/w3af/core/ui/gui/tools/proxywin.py", line 254, in reload_options
self._start_proxy()

 "/usr/share/w3af/w3af/core/ui/gui/tools/proxywin.py", line 308, in _start_proxy
self.proxy = InterceptProxy(ip, int(port), self.w3af.uri_opener)

 "/usr/share/w3af/w3af/core/controllers/daemons/proxy/intercept_proxy.py", line 48, in __init__
name='LocalProxyThread')

 "/usr/share/w3af/w3af/core/controllers/daemons/proxy/proxy.py", line 122, in __init__
port=port)

 "/usr/share/w3af/mitmproxy/proxy/config.py", line 106, in __init__
sslversion_choices[ssl_version_client]KeyError: 'SSLv23'
Traceback (most recent call last):

 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpxzf4ix2_\build\youtube_dl\extractor\common.py", line 544, in _parse_json

 "C:\Python\Python34\lib\json\__init__.py", line 318, in loads

 "C:\Python\Python34\lib\json\decoder.py", line 343, in decode

 "C:\Python\Python34\lib\json\decoder.py", line 361, in raw_decodeValueError: Expecting value: line 1 column 1 (char 0)