Terrain Surface from Mesh

Following this tutorial to create a terrain surface from a mesh: Complicated Mesh To Smooth Surface in Grasshopper | How to create surface from mesh and subdivide - YouTube. But somehow this approach returns errors and I don’t know why. Would appreciate some advise.
Terrain.gh (1.1 MB)

You could convert the points directly to a surface using SrfGrid:

Terrain_2023_Jul29a.gh (1.1 MB)

In your file you already have a grid of points, you can use them to create mesh or surface

Terrain.gh (1.1 MB)

Thanks so much. I always overcomplicate everything, haha.

Thanks, this is perfect!