URDF not loading

[ChaitanyaDev123]

urdf of my robot is not loading in champ setup assistant window

[grassjelly]

Could you provide more information please?

[Numieo]

Solved! 'sudo apt install ros-melodic-moveit-ros-planning-interface'

before install moveit-ros-planning-interface:

Ubuntu 18.04

after 'roslaunch champ_setup_assistant setup_assistant.launch'

there are some issue:
PluginlibFactory: The plugin for class 'champ/RobotState' failed to load. Error: Could not find library corresponding to plugin champ/RobotState. Make sure the plugin description XML file has the correct name of the library and that the library actually exists.

when I load HitSZwang/mini-cheetah-gazebo-urdf's yobotics.urdf

Unknown tag "material" in /robot[@name='yobotics_description']/link[@name='RL_thigh']/collision[1]
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='RL_hip_tran']/actuator[@name='RL_hip_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='RL_thigh_tran']/actuator[@name='RL_thigh_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='RL_calf_tran']/actuator[@name='RL_calf_motor']
Unknown tag "material" in /robot[@name='yobotics_description']/link[@name='FL_thigh']/collision[1]
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='FL_hip_tran']/actuator[@name='FL_hip_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='FL_thigh_tran']/actuator[@name='FL_thigh_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='FL_calf_tran']/actuator[@name='FL_calf_motor']
Unknown tag "material" in /robot[@name='yobotics_description']/link[@name='RR_thigh']/collision[1]
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='RR_hip_tran']/actuator[@name='RR_hip_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='RR_thigh_tran']/actuator[@name='RR_thigh_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='RR_calf_tran']/actuator[@name='RR_calf_motor']
Unknown tag "material" in /robot[@name='yobotics_description']/link[@name='FR_thigh']/collision[1]
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='FR_hip_tran']/actuator[@name='FR_hip_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='FR_thigh_tran']/actuator[@name='FR_thigh_motor']
Unknown tag "hardwareInterface" in /robot[@name='yobotics_description']/transmission[@name='FR_calf_tran']/actuator[@name='FR_calf_motor']