ValueError: [GDSPY] Multiple cells with name <> in GDSII file

[Wilson-Edwards-1]

Dear Developers,
I recently met a problem when I was dealing with .gds files. I'm using a simulation software called Lumerical, and the gds files they generated could have multiple cells with the same name. Could you please help to think of a way to avoid such problem?
Thank you so much for providing this code. It works fine at situations other than that.

W. Edwards