About Gazebo characters can't move

[JerryYeung1001]

Hello.
First of all, thank you very much for the development of the project. I encountered some problems during operation and would like to ask for some advice. Since it is my first time to use Arena Rosnav, I am not very familiar with the overall situation.
I'm running：roslaunch arena_bringup start_arena.launch simulator:=gazebo map_file:=arena_hospital_small local_planner:=teb model:=jackal tm_robots:=random tm_obstacles:=random, the characters in gazebo do not move according to the routes (as shown in the figure below), while characters in Rviz can move (as shown in the figure below). Therefore, I would like to ask how to set them up in gazebo. Can characters also move like they do in Rviz?
I really hope to get your help. Thank you very much！
Best
JY