This function parameter expects a value of type tuple(material,int), but this argument is an incompatible value of type tuple(type(test_Mat, test_Mat),int).(3509)

Hey, I was wondering if anybody knew how to make out this error regarding my material.

This function parameter expects a value of type tuple(material,int), but this argument is an incompatible value of type tuple(type(test_Mat, test_Mat),int).(3509)

Try adding {} after the material name