Hi I am having problems to visualize any xacro in model in Gazebo... This problem started after I began to spawn multiple robots on it.... My Gazebo was working well, but now everytime it keeps waiting to spawn a robot model, does not show error msgs, but also does not keep working...sometimes it return the message shutdown timeout or then it displays that spawned the model but the model does not appear on gazebo (pseudo appear). I have tried with numerous kind off differente car models and unfortunately does not work:

and the prius car is there (was spawned but does not appear) and I have already copied the meshes to gazebo's models directory and

what is wrong?