How to make terrain unlite material in Unity6

Hi there!

I really want to know how to make the 3d terrain not reflect any light or make it seem to be unlit material?

I using URP and when I use default material, the terrain said…
“the provided material’s shader might be unsuitable
for use with terrain in the active render pipeline”

I don’t know what to do…
I just want Unlit material, to make it looks more natual than this wet floor,

Thanks!

me too man, they’re making it so complicated to do the most simple things