spawn a map in sdf [closed]

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hello everyone,

i have created a map in gazebo building, and safed the .config and .sdf in my workspace/worlds.

In my launch file i put the following: <arg name="world_name" value="$(find catkin_ws)/src/worlds/model.sdf"/>

everytime i launch it, i get the error that the following package was not found in <arg name="world_name" value="$(find catkin_ws)/src/worlds/model.sdf"/>: catkin_ws

i also sourced the workspace in my ~/-bashrc, but it doesn't work either way.

can someone please explain me, how i can spawn my self created map in gazebo?

Thanks