ros2 launch learning_urdf display.launch.py
[INFO] [launch]: All log files can be found below /home/wheeltec/.ros/log/2025-07-11-20-46-04-934215-galactic-16082
[INFO] [launch]: Default logging verbosity is set to INFO
Task exception was never retrieved
future: <Task finished name='Task-2' coro=<LaunchService._process_one_event() done, defined at /opt/ros/galactic/lib/python3.8/site-packages/launch/launch_service.py:226> exception=PackageNotFoundError("package 'joint_state_publisher' not found, searching: ['/home/wheeltec/dev_ws1/install/learning_urdf', '/home/wheeltec/dev_ws1/install/learning_topic_cpp', '/home/wheeltec/dev_ws1/install/learning_topic', '/home/wheeltec/dev_ws1/install/learning_tf_cpp', '/home/wheeltec/dev_ws1/install/learning_tf', '/home/wheeltec/dev_ws1/install/learning_service_cpp', '/home/wheeltec/dev_ws1/install/learning_service', '/home/wheeltec/dev_ws1/install/learning_qos', '/home/wheeltec/dev_ws1/install/learning_pkg_python', '/home/wheeltec/dev_ws1/install/learning_pkg_c', '/home/wheeltec/dev_ws1/install/learning_parameter_cpp', '/home/wheeltec/dev_ws1/install/learning_parameter', '/home/wheeltec/dev_ws1/install/learning_node_cpp', '/home/wheeltec/dev_ws1/install/learning_node', '/home/wheeltec/dev_ws1/install/learning_launch', '/home/wheeltec/dev_ws1/install/learning_action_cpp', '/home/wheeltec/dev_ws1/install/learning_action', '/home/wheeltec/dev_ws1/install/learning_interface', '/home/wheeltec/dev_ws1/install/learning_gazebo_harmonic', '/home/wheeltec/dev_ws1/install/learning_gazebo', '/home/wheeltec/dev_ws1/install/learning_cv', '/home/wheeltec/usb_cam_ws/install/usb_cam', '/opt/ros/galactic']")>
Traceback (most recent call last):
File "/opt/ros/galactic/lib/python3.8/site-packages/ament_index_python/packages.py", line 50, in get_package_prefix
content, package_prefix = get_resource('packages', package_name)
File "/opt/ros/galactic/lib/python3.8/site-packages/ament_index_python/resources.py", line 48, in get_resource
raise LookupError(
LookupError: Could not find the resource 'joint_state_publisher' of type 'packages'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/launch_service.py", line 228, in _process_one_event
await self.__process_event(next_event)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/launch_service.py", line 248, in __process_event
visit_all_entities_and_collect_futures(entity, self.__context))
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/utilities/visit_all_entities_and_collect_futures_impl.py", line 45, in visit_all_entities_and_collect_futures
futures_to_return += visit_all_entities_and_collect_futures(sub_entity, context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/utilities/visit_all_entities_and_collect_futures_impl.py", line 45, in visit_all_entities_and_collect_futures
futures_to_return += visit_all_entities_and_collect_futures(sub_entity, context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/utilities/visit_all_entities_and_collect_futures_impl.py", line 45, in visit_all_entities_and_collect_futures
futures_to_return += visit_all_entities_and_collect_futures(sub_entity, context)
[Previous line repeated 1 more time]
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/utilities/visit_all_entities_and_collect_futures_impl.py", line 38, in visit_all_entities_and_collect_futures
sub_entities = entity.visit(context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/action.py", line 108, in visit
return self.execute(context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch_ros/actions/node.py", line 484, in execute
ret = super().execute(context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/actions/execute_process.py", line 837, in execute
self.__expand_substitutions(context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/actions/execute_process.py", line 681, in __expand_substitutions
cmd = [perform_substitutions(context, x) for x in self.__cmd]
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/actions/execute_process.py", line 681, in <listcomp>
cmd = [perform_substitutions(context, x) for x in self.__cmd]
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/utilities/perform_substitutions_impl.py", line 26, in perform_substitutions
return ''.join([context.perform_substitution(sub) for sub in subs])
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/utilities/perform_substitutions_impl.py", line 26, in <listcomp>
return ''.join([context.perform_substitution(sub) for sub in subs])
File "/opt/ros/galactic/lib/python3.8/site-packages/launch/launch_context.py", line 197, in perform_substitution
return substitution.perform(self)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch_ros/substitutions/executable_in_package.py", line 76, in perform
package_prefix = super().perform(context)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch_ros/substitutions/find_package.py", line 79, in perform
result = self.find(package)
File "/opt/ros/galactic/lib/python3.8/site-packages/launch_ros/substitutions/find_package.py", line 96, in find
return get_package_prefix(package_name)
File "/opt/ros/galactic/lib/python3.8/site-packages/ament_index_python/packages.py", line 52, in get_package_prefix
raise PackageNotFoundError(
ament_index_python.packages.PackageNotFoundError: "package 'joint_state_publisher' not found, searching: ['/home/wheeltec/dev_ws1/install/learning_urdf', '/home/wheeltec/dev_ws1/install/learning_topic_cpp', '/home/wheeltec/dev_ws1/install/learning_topic', '/home/wheeltec/dev_ws1/install/learning_tf_cpp', '/home/wheeltec/dev_ws1/install/learning_tf', '/home/wheeltec/dev_ws1/install/learning_service_cpp', '/home/wheeltec/dev_ws1/install/learning_service', '/home/wheeltec/dev_ws1/install/learning_qos', '/home/wheeltec/dev_ws1/install/learning_pkg_python', '/home/wheeltec/dev_ws1/install/learning_pkg_c', '/home/wheeltec/dev_ws1/install/learning_parameter_cpp', '/home/wheeltec/dev_ws1/install/learning_parameter', '/home/wheeltec/dev_ws1/install/learning_node_cpp', '/home/wheeltec/dev_ws1/install/learning_node', '/home/wheeltec/dev_ws1/install/learning_launch', '/home/wheeltec/dev_ws1/install/learning_action_cpp', '/home/wheeltec/dev_ws1/install/learning_action', '/home/wheeltec/dev_ws1/install/learning_interface', '/home/wheeltec/dev_ws1/install/learning_gazebo_harmonic', '/home/wheeltec/dev_ws1/install/learning_gazebo', '/home/wheeltec/dev_ws1/install/learning_cv', '/home/wheeltec/usb_cam_ws/install/usb_cam', '/opt/ros/galactic']"
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