How to change PX4 Gazebo (last version) home point when launching a simulation

I am writing a python script to simulate several flights of drones and send their telemetry to a mqtt broker.
I have already used the make command to create the environment and I am able to start the simulator in the origin of the default world in Gazebo. The problem is I am not able to establish the initial position of the vehicle when launching the simulator afterwards.
I launch the simulator like this:

    px4_path = "/home/davmasero/PX4-Autopilot/build/px4_sitl_default/bin/px4"
    env = os.environ.copy()
    env["PX4_SYS_AUTOSTART"] = "4001"  # Ajusta esto según tu configuración
    env["PX4_SIM_MODEL"] = "gz_x500"  # Ajusta esto según tu modelo
    x, y, z = latlon_to_cartesian(latitude, longitude, altitude)
    env["PX4_GZ_MODEL_POSE"] = f"{x},{y},0,0,0,0"
    env["PX4_SIMULATOR"] = "gz"
    env["HEADLESS"] = "1"
    subprocess.Popen([px4_path], env=env)

The “PX4_GZ_MODEL_POSE” is supposed to reset the starting position of the vehicle with respect to the gazebo origin (which I have modified in the file, btw). Since the gazebo world coordinates have the x,y,z format, I am projecting the lat lon coordinates and setting them up with respect to the origin of the world. The problem is that, although the simulator starts correctly when launching it, for positions like:

[init] PX4_GZ_MODEL_POSE set, spawning at: 1985.7363611118635,-3075.866821288131,0,0,0,0

I find the following error:

pxh> WARN  [health_and_arming_checks] Preflight Fail: ekf2 missing data

Or other arming errors which make the simulator crash.

I really don’t know what the problem might be, since I’m just setting a POSE wrt to the origin of the world and the format is correct. Is there any other way to set the home point correctly?

Do you mean Gazebo Classic by “last version”?

@Jaeyoung-Lim Is this something you can advise on?

I mean the version installed in Ubuntu 22.04
I’d say it is the garden version (?)