Grader Error in assignment submission

The following error occurs while submitting assignment but there is no global variables used inside the graded function.Kindly help me to resolve the issue.
Grader found global variables inside graded fuctions. Please avoid using global variables in your functions.

Hi,
I think there is something down with the server, so maybe try another time.

Hi @Yamunathangam_D,

You are, in fact, using a global variable inside your Ex 6. You are using the global variable model. Use the function parameter instead.

Best,
Mubsi

Thanks @Mubsi ,
its rectified.