I want use darknet_3d in gazebo. I changed darknet_3d.yaml file.  When I launched file, I got a below error code.. and doesn't show darknet_3d.  Do you happen to know fix it? I used darknet_ros_3d.launch. Below is my node 
I want use darknet_3d in gazebo.

I changed darknet_3d.yaml file.
When I launched file, I got a below error code.. and doesn't show darknet_3d.

Do you happen to know fix it?
I used darknet_ros_3d.launch.
Below is my node
