Exercise 4.3 octomap enviorment with moveit

hello in exercise 4.3 im trying to see the octomap with the moveit but when i run this i can only see the moveit enviorment.

this is the error i get:
ERROR: cannot launch node of type [load_octomap/octoload.py]: can’t locate node [octoload.py] in package [load_octomap]
[ INFO] [1679568436.346932624, 3845.005000000]: Publishing latched (single publish will take longer, all topics are prepared)
[ WARN] [1679568436.419391134, 3845.072000000]: Nothing to publish, octree is empty

my launch file:

<arg name="path" default="/home/simulations/public_sim_ws/src/all/tum_ardrone_sim/tum-simulator-indigo/cvg_sim_gazebo/maps/small_octomap.bt"/>

<node pkg="octomap_server" type="octomap_server_node" name="octomap_talker" output="screen" args="$(arg path)">

<node pkg="load_octomap" type="octoload.py" name="moveit_octomap_handler" output="screen">


anyone can help?

solved this.
forget to use
chmod +x for the octoload.py

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