I am using Gazebo through ROS. I am on ROS Noetic.

I have a catkin package which includes a models/ and world/ directories that include some models and some world files. Then I observed in the package.xml of that package there are two lines that tell Gazebo (?) where to find the models and world files:

<gazebo_ros gazebo_model_path="${prefix}/models"/>
<gazebo_ros gazebo_resource_path="${prefix}/world"/>

Everything works as expected if I edit the world file and add new models in the models directory.

Now I created a new catkin package with its models and world directories. In the package.xml of that new package, I include those two lines. However, when running Gazebo