When I was enabling G38, I ran into that problem. And when I attempted to address the Z_MIN issue, other errors popped up. In the end I got it working, and the exact recipe (lines changed in configuration.h and configuration_adv.h) I used can be found in this post. Note the specific recipe I outline creates a safe zone for homing Z. This works well with my “bitsetter,” but it will prevent you from using G28 with a touch plate. You will need to use G38 for any probing tasks.
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