Installing household_object_database on my local server
Hi, I have been following the tutorial but when i run the launch file as given in the tutorial with my parameters, it gives the following error.
load_parameters: unable to set parameters (last param was [/database_pass=willow]): cannot marshal None unless allow_none is enabled
Traceback (most recent call last):
File "/opt/ros/electric/stacks/ros_comm/tools/roslaunch/src/roslaunch/__init__.py", line 252, in main
p.start()
File "/opt/ros/electric/stacks/ros_comm/tools/roslaunch/src/roslaunch/parent.py", line 265, in start
self.runner.launch()
File "/opt/ros/electric/stacks/ros_comm/tools/roslaunch/src/roslaunch/launch.py", line 644, in launch
self._setup()
File "/opt/ros/electric/stacks/ros_comm/tools/roslaunch/src/roslaunch/launch.py", line 631, in _setup
self._load_parameters()
File "/opt/ros/electric/stacks/ros_comm/tools/roslaunch/src/roslaunch/launch.py", line 322, in _load_parameters
r = param_server_multi()
File "/usr/lib/python2.7/xmlrpclib.py", line 997, in __call__
return MultiCallIterator(self.__server.system.multicall(marshalled_list))
File "/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.7/xmlrpclib.py", line 1569, in __request
allow_none=self.__allow_none)
File "/usr/lib/python2.7/xmlrpclib.py", line 1085, in dumps
data = m.dumps(params)
File "/usr/lib/python2.7/xmlrpclib.py", line 632, in dumps
dump(v, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 654, in __dump
f(self, value, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 714, in dump_array
dump(v, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 654, in __dump
f(self, value, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 735, in dump_struct
dump(v, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 654, in __dump
f(self, value, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 714, in dump_array
dump(v, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 654, in __dump
f(self, value, write)
File "/usr/lib/python2.7/xmlrpclib.py", line 658, in dump_nil
raise TypeError, "cannot marshal None unless allow_none is enabled"
TypeError: cannot marshal None unless allow_none is enabled
I don't have knowledge in python so can someone let me know what is the mistake done here.
Thanks, Karthik
Below is the launch file i am using; its a copy of the same in the tutorial page except the package name where it finds the .yaml file
<launch>
<!-- load database connection parameters -->
<rosparam command="load" file="$(find object_detection_test)/config/my_server.yaml"/>
<!-- start the database wrapper node -->
<node pkg="household_objects_database" name="objects_database_node" type="objects_database_node" respawn="true" output="screen"/>
</launch>
My my_server.yaml file is as below, similar to the one in the tutorial
household_objects_database:
database_host: 10.2.36.233
database_port: 5432
database_user: willow
database_pass: ####
database_name: household_objects
household_objects is the database that i created in pgadmin3 and have following the instructions in link
Comments
It looks like roslaunch is generating an error while trying to set parameters; possibly a typo in your launch file. Can you post the launch file you're using?
ahendrix
(
2012-01-17 18:15:53 -0600
)edit
Hey thanks for the quick reply. I edited my question with the launch file.
karthik
(
2012-01-17 18:53:09 -0600
)edit
Or possibly a typo in your yaml file. Can you post the yaml file you're using? (you may want to obscure passwords and such). Are there any weird characters in your password or other parameters?
ahendrix
(
2012-01-17 18:54:11 -0600
)edit
I have posted the .yaml file in my question. I don have any weird characters in any of the parameters
karthik
(
2012-01-17 19:35:28 -0600
)edit
The 10.2.36.233 might parse as a floating point number with too many decimal points. Try "10.2.36.233", so it looks like a string.
joq
(
2012-01-18 02:44:06 -0600
)editadd a comment
