After sourcing . /opt/ros/humble/setup.bash and running ros2 topic list, I got the following error:
Traceback (most recent call last):
File "/opt/ros/humble/bin/ros2", line 33, in <module>
sys.exit(load_entry_point('ros2cli==0.18.3', 'console_scripts', 'ros2')())
File "/opt/ros/humble/lib/python3.10/site-packages/ros2cli/cli.py", line 89, in main
rc = extension.main(parser=parser, args=args)
File "/opt/ros/humble/lib/python3.10/site-packages/ros2topic/command/topic.py", line 41, in main
return extension.main(args=args)
File "/opt/ros/humble/lib/python3.10/site-packages/ros2topic/verb/list.py", line 56, in main
topic_names_and_types = get_topic_names_and_types(
File "/opt/ros/humble/lib/python3.10/site-packages/ros2topic/api/__init__.py", line 41, in get_topic_names_and_types
topic_names_and_types = node.get_topic_names_and_types()
File "/usr/lib/python3.10/xmlrpc/client.py", line 1122, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python3.10/xmlrpc/client.py", line 1464, in __request
response = self.__transport.request(
File "/usr/lib/python3.10/xmlrpc/client.py", line 1166, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib/python3.10/xmlrpc/client.py", line 1182, in single_request
return self.parse_response(resp)
File "/usr/lib/python3.10/xmlrpc/client.py", line 1354, in parse_response
return u.close()
File "/usr/lib/python3.10/xmlrpc/client.py", line 668, in close
raise Fault(**self._stack[0])
xmlrpc.client.Fault: <Fault 1: "<class 'rclpy._rclpy_pybind11.InvalidHandle'>:cannot use Destroyable because destruction was requested">
This happens when some node unexpectedly crashed previously. Although ros2 launch and ros2 run commands still work, ros2 topic list doesn't work anymore.
Solution
ros2 daemon stopros2 daemon start
This fixed the issue for me.
Source
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