Homing problem with "ratOS_homing" not valid section

Hi there.
I installed Klipper on a pc with Kiauh on a Ratrig Vcore 3. I'm having issue with the ratOS_homing section which is not considered valid. The z homing is not being done in the middle of the bed, i have to manually move the head to the center of the bed otherwise the head crash into the bed.

I have a second problem with the shell-macros file and especially with shells command-generate_shape_graph. I found the methode to relink this macro however i cannot connect to http://ratos.local/configure, because i'm not on a pi, mayble...
https://os.ratrig.com/docs/troubleshooting/#section-gcode_shell_command-generate_shaper_graph_x-or-others-is-not-a-valid-config-section
is there a way to make theses macro work ?
Any lead on how to solve theses problems would be appreciated, thanks in advance ๐Ÿ˜‰
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My steppers are running backwards!
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