Error:Solution exception:Object reference not set to an instance of an object

Hi,

I am using salamander 3 to move a geometry from Rhino to Robot. Yesterday the script was working perfectly. Today i got this message everytime I try to run the script.

“1. Solution exception:Object reference not set to an instance of an object.”

I have read many discussions on the forum but I am not able to solve the problem yet. I have attached the file to the message.

!!! Please Help Me!!!

Panel_shape.gh (28.5 KB)