Error in filing gstr1 for march 2019

I am facing issue in filing GSTR 1 for January to March 2019 quarter. Since I only sell Nil Rated Items I filled the 8A, 8B, 8C, 8D - Nil Rated Supplies Section. But when I try t o file the return, it shows error 

Error! You have no summary to submit GSTR1

How to fix this? I have filed the GSTR3B for March.