Interest payable in late filing if GSTR3B

I am textile manufacturer and I have filed my Gstr 3b for the month of November 2017 only in the month of September 2018. I have Itc and no tax liability arises. I have paid late fees. my doubt is whether I should pay interest on output gst. my assessing officer ask me to pay interest on output gst as I have not adjusted tax liability with ITC within the due tax.