Square artifacts when baking stationary light

Good afternoon! Has anyone encountered a similar error - square artifacts when baking light?

I have the same problem!

Any help would be great!

I fixed this by checking Force No Precomputed Lighting and baked twice. This will remove all lightmaps, rebaked and it fixed it. I give no guarantees, though.

I fixed this by checking Force No Precomputed Lighting and baked twice. This will remove all lightmaps, rebaked and it fixed it. I give no guarantees, though.

i tried it but it didn’t work for me

What about adding thickness to the object that’s casting the shadow? Instead of it being a 1 sided poly. (no idea if yours is 1 sided, but this may also help fix)

thanks interesting answer, I will try. but the truth also shows up on landscape