je viens de regarder ton fichier config tu as fait des doublons de lignes dans les paramètres, en recopiant .. compare avec le miens :
# Levelling strategy
# Example for 3-point levelling strategy, see wiki documentation for other strategies
leveling-strategy.rectangular-grid.enable true # The strategy must be enabled in the config, as well as the zprobe module.
leveling-strategy.rectangular-grid.x_size 430 # size of bed in the X axis
leveling-strategy.rectangular-grid.y_size 360 # size of bed in the Y axis
leveling-strategy.rectangular-grid.size 5 # The size of the grid, for example, 7 causes a 7x7 grid with 49 points.
# Must be an odd number.
leveling-strategy.rectangular-grid.do_home true
leveling-strategy.rectangular-grid.probe_offsets -25,-60,0 # Optional probe offsets from the nozzle or tool head
leveling-strategy.rectangular-grid.save false # If the saved grid is to be loaded on boot then this must be set to true
leveling-strategy.rectangular-grid.initial_height 10 # will move to Z10 before the first probe
leveling-strategy.rectangular-grid.dampening_start 0.5 # compensation decrease point (optional)
leveling-strategy.rectangular-grid.height_limit 1 # no compensation to apply after this point (optional)
mm_per_line_segment 1 # necessary for cartesians using rectangular-grid