UE5.1 Landscape Physical Material Needs To Be Rebuilt

[EASTSIDEWATTS]

@Reamo

The same with me.
I did a completely new installation of 5.0 / 5.1 / 5.2 and then created a blank project.
Then, I created a new level and generated a landscape.
With all three versions, I’m getting this error directly, and there seems to be no way to fix it.

How can this be happening?

I am having the same exact problem myself.