Launching URDF model in gazebo, when I press the "run" key, the model is in chaos? How to solve the problem?

In Rviz ,the URDF model can run well, and every joint runs well.

As far as I know, there may be several reasons for it.
What do you mean by chaos? Twitching behavior?
Maybe it would be useful if you could provide the URDF of the robot.







/neuoid transmission_interface/SimpleTransmission PositionJointInterface PositionJointInterface 1 Thank you for your reply. Above is a part of the URDF file. When I press the "run" key in Gazebo, the coordinate of each joint comes together. So every link is in chaos. Thanks.