cannot install packages Ajenti 1.2.22 on ubuntu 15.04

File "/usr/local/lib/python2.7/dist-packages/aj/api/endpoint.py", line 69, in wrapper result = fx(self, context, *args, **kwargs) 
File "/usr/local/lib/python2.7/dist-packages/ajenti_plugin_packages/views.py", line 47, in handle_api_list for package in self.managers[manager_id].list(query=query) 
File "/usr/local/lib/python2.7/dist-packages/ajenti_plugin_packages/managers/pip_manager.py", line 45, in list for dist in self.client.search({'name': query}): 
File "/usr/lib/python2.7/xmlrpclib.py", line 1233, in __call__ return self.__send(self.__name, args) 
File "/usr/lib/python2.7/xmlrpclib.py", line 1591, in __request verbose=self.__verbose 
File "/usr/lib/python2.7/xmlrpclib.py", line 1273, in request return self.single_request(host, handler, request_body, verbose) 
File "/usr/lib/python2.7/xmlrpclib.py", line 1301, in single_request self.send_content(h, request_body) 
File "/usr/lib/python2.7/xmlrpclib.py", line 1448, in send_content connection.endheaders(request_body) 
File "/usr/lib/python2.7/httplib.py", line 1044, in endheaders self._send_output(message_body) 
File "/usr/lib/python2.7/httplib.py", line 888, in _send_output self.send(msg) 
File "/usr/lib/python2.7/httplib.py", line 850, in send self.connect() 
File "/usr/lib/python2.7/httplib.py", line 1269, in connect server_hostname=server_hostname) 
File "/usr/lib/python2.7/ssl.py", line 352, in wrap_socket _context=self) TypeError: __init__() got an unexpected keyword argument 'server_hostname'