Gstr 9 2018-19

sir, in 2017-18 my client annual turnover was under 2 crore.so we not filed Gstr 9.now 2018-19 turnover increase above 2 crore.when we try to open Gstr9 of 2018-18 message shows first you file Gstr9 of 2017-18. and 2028-19 Gstr9 not open.what is solution sir?