1. Solution exception:Geometry must be either a Brep or a Mesh. Not <type 'NoneType'>

[zahrashirzadnia]

would you plz help to solve it?
@Aliarch

[Aliarch]

please make sure the geometry was input correctly

[chris]

There’s a Native Grasshopper component called “Clean Tree” that can help you weed out the nulls from your geometry input there.