Failure to train a robot

[allenyege]

Hello, I used this command according to the tutorial：“roslaunch arena_bringup start_training.launch model:=jackal num_envs:=1 map_folder_name:=map_empty”，then i used this command: "cd arena-rosnav
python training/scripts/train_agent.py". I got this mistake: "timeout exceeded while waiting for service /sim_2/move_model".

My guess is that the num_envs is causing the problem, but I do not know how to fix it. Can you help me?

[allenyege]

i solve this problem