roslaunch a1_config navigate.launch is not working properly

[x4ahmed]

I cloned champ repo and build it successfully and also cloned the other URDFs repo in order to run a1 robot on gazebo and rviz, I noticed that every single robot is working and navigating perfectly fine except for the a1 robot, I didn’t change any thing I just tried to run it as the description file said. Do you have any suggestions how to avoid these errors in the following picture? Thank you so much in advance.