When I run roscore, it has the following error.
Hi:
When I use roscore command, it has the following error. Please help me.
... logging to /home/turtlebot/.ros/log/b271445a-f9f2-11e0-ad43-485d607d0ff5/roslaunch-turtlebot8-4104.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
Traceback (most recent call last):
File "/opt/ros/diamondback/stacks/ros_comm/tools/roslaunch/src/roslaunch/__init__.py", line 247, in main
p.start()
File "/opt/ros/diamondback/stacks/ros_comm/tools/roslaunch/src/roslaunch/parent.py", line 254, in start
self._start_infrastructure()
File "/opt/ros/diamondback/stacks/ros_comm/tools/roslaunch/src/roslaunch/parent.py", line 212, in _start_infrastructure
self._start_server()
File "/opt/ros/diamondback/stacks/ros_comm/tools/roslaunch/src/roslaunch/parent.py", line 163, in _start_server
self.server.start()
File "/opt/ros/diamondback/stacks/ros_comm/tools/roslaunch/src/roslaunch/server.py", line 371, in start
code, msg, val = xmlrpclib.ServerProxy(self.uri).get_pid()
File "/usr/lib/python2.6/xmlrpclib.py", line 1199, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.6/xmlrpclib.py", line 1489, in __request
verbose=self.__verbose
File "/usr/lib/python2.6/xmlrpclib.py", line 1228, in request
h = self.make_connection(host)
File "/usr/lib/python2.6/xmlrpclib.py", line 1305, in make_connection
return httplib.HTTP(host)
File "/usr/lib/python2.6/httplib.py", line 1020, in __init__
self._setup(self._connection_class(host, port, strict))
File "/usr/lib/python2.6/httplib.py", line 657, in __init__
self._set_hostport(host, port)
File "/usr/lib/python2.6/httplib.py", line 682, in _set_hostport
raise InvalidURL("nonnumeric port: '%s'" % host[i+1:])
InvalidURL: nonnumeric port: ''