rTorrent error in HTPC

2018-09-17 20:12:09 :: cherrypy.error.22858554480464 :: ERROR :: [17/Sep/2018:20:12:09] HTTP

Traceback (most recent call last):
File "/app/htpcmanager/libs/cherrypy/_cprequest.py", line 670, in respond
response.body = self.handler()
File "/app/htpcmanager/libs/cherrypy/lib/encoding.py", line 217, in __call__
self.body = self.oldhandler(*args, **kwargs)
File "/app/htpcmanager/libs/cherrypy/lib/jsontools.py", line 63, in json_handler
value = cherrypy.serving.request._json_inner_handler(*args, **kwargs)
File "/app/htpcmanager/libs/cherrypy/_cpdispatch.py", line 61, in __call__
return self.callable(*self.args, **self.kwargs)
File "/app/htpcmanager/modules/rtorrent.py", line 42, in queue
"d.get_hash=", "d.get_state=")
File "/usr/lib/python2.7/xmlrpclib.py", line 1243, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.7/xmlrpclib.py", line 1602, in __request
verbose=self.__verbose
File "/usr/lib/python2.7/xmlrpclib.py", line 1283, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib/python2.7/xmlrpclib.py", line 1316, in single_request
return self.parse_response(response)
File "/usr/lib/python2.7/xmlrpclib.py", line 1493, in parse_response
return u.close()
File "/usr/lib/python2.7/xmlrpclib.py", line 800, in close
raise Fault(**self._stack[0])
Fault: <Fault -506: "Method 'd.multicall' not defined">