hi all 2 years ago i build my own 3d printer 400x400x400
i used a ramps1.4 board and marlin1.9 and it has been working fine.
but i wanted to go faster so i replaced the MEGA with a DUE (BOARD_RADDS) and trying to use marlin 2.1.1 and almost everything seems to work fine.

but i use a BLTOUCH and it works fine but i like to use AUTO_BED_LEVELING_BILINEAR but the moment i enable that (uncomment the //) and try to compile it i get
Compilation error: could not convert '5' from 'int' to 'XYval::'

and i found out the '5' is from "#define GRID_MAX_POINTS_X 5" if i change the 5 with a other value like default 3 it get
Compilation error: could not convert '3' from 'int' to 'XYval::'

Why! i dont get it. can someone shed some light on this issue?

marlinerrorcode.txt Error from IDE
configfile.txt config file for marlin

Use platformio with vscode not the old and painful Arduino IDE

[marlinfw.org]

thanks now it works.