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):

 "/usr/share/w3af/w3af/core/ui/gui/tabs/exploit/exploit_all.py", line 174, in _launch_exploit_all
exploit.exploit()

 "/usr/share/w3af/w3af/core/controllers/plugins/attack_plugin.py", line 208, in exploit
s = self._generate_shell(vuln)

 "/usr/share/w3af/w3af/plugins/attack/sqlmap.py", line 79, in _generate_shell
if self._verify_vuln(vuln_obj):

 "/usr/share/w3af/w3af/plugins/attack/sqlmap.py", line 119, in _verify_vuln
sqlmap = SQLMapWrapper(target, self._uri_opener)

 "/usr/share/w3af/w3af/plugins/attack/db/sqlmap_wrapper.py", line 85, in __init__
self.start_proxy(uri_opener)

 "/usr/share/w3af/w3af/plugins/attack/db/sqlmap_wrapper.py", line 97, in start_proxy
self.proxy = Proxy(host, 0, uri_opener, name='SQLMapWrapperProxy')

 "/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'