Backed lighting affects only one terrain and creates this weird shadow line between the two terrains, HELP!

[Kamzoki]

I have a directional light "Mode: mixed ".

I’ve also got two terrains. When I enable shadow and I bake light in the scene, this happened:

Note that I’m on URP and I’m using Flatkit toon shader as the material for my terrains.

[cukrhraje]

Make sure you ve created the terrain with home terrain tool