Error of Node::Advertise() and discovery service problem

asked 2023-07-13 15:30:23 -0500

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Hi, There! I have installed Gazebo11 along with ROS Noetic on Ubuntu 20.04. When I want to run and work Gazebo either standalone or using ros-gazebo, I face the problem of: Node::Advertise(): Error advertising topic [/ModelPreview_0/link_0/joint_cmd]. Did you forget to start the discovery service? Moreover, the Gazebo crashes suddenly somewhere in the middle of the work. I would really appreciate any feedback or comment to solve this issue. Best regards, Hamid

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