LUA ahrs:get_pitch method returns nil value

HI everyone, I have problem with ahrs method on LUA. In my script I need to get current pitch positon of vehicle. In Lua docs only one method that I find its ahrs:get_pitch(), but when I try to call it, it`s returns nil value.

I tried to call ahrs:healthy and ahrs:initialised, but it`s also return nil values. So, when I call any of ahrs functions, it returns nil.

I tried to call ahrs after dron arming, but that not help:

if not arming:is_armed() then
    gcs:send_text(6, "Not Armed")
    return update, 1000
end

if ahrs:healthy() then
    gcs:send_text(6, "AHRS ready")
else
    gcs:send_text(6, "AHRS not ready")
end

ahrs.pitch = math.deg(ahrs:get_pitch())

but I always have nil value on any call of ahrs

Tested all of that on SITL and Cube Orange Plus, have same resault.
Also tried to set BRD_boot_delay 15000, no help.

SCR_enable is 1
SCR_HEAP_SIZE 204800

So, what problem may be with ahrs method?
Also, may be exist some other method to get pitch current position of drone?

ahrs problem params SITL.param (24.4 KB)

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