Why i am getting error "Initialization commands cannot be evaluated"

Why i am getting error "Initialization commands cannot be evaluated."

It is showing that error may caused by : File name must be a character row vector or a string scalar having nonempty character contents.

[Jyotsna Talluri]

The model looks correct.Could you share the FIS object so that I can verify the model

[Nagarjuna Arjun]

look at the fis object and tell me where i have done wrong.