genCumulativeSkyMtx "could not find file" error

I start using LadyBug and try very basic one from tutorials and it turns out like this.

I don’t know how to fix it. Every time I generate skymtx, “cannot find the file” error happens.
Could it be because of my computer operating system?

@nyanlinnaung Are you using Rhino and Grasshopper on MacOS?

Yes. I think it is some kind of error in coding that my os doesn’t allow to do it.

there is no way to make it work??