error showing for gstr 1 nil return

Sir,

Please enter "0" (Zero) every were it required.

The problem will be solved

EVEN IF WE PUT 0 WHENEVER REQUIRED THAT SAME ERROR IS COMING, it says you have no invoice to enter

everyone is facing the same error even digital signature option not enable in GSTR1 so i think we should wait for one or two days.

In NIL Return we can fill a 0 Rated and 0 Value Invoice in to B to C Section. After that you can file Nil GSTR 1 return. Please note that this resolution has not verified. Please use this resolution upon your discretion; although I hvace filed one GSTR 1 through this trick. 

Reference: Also check this link: https://atul.caclub.in/mandatory-to-file-gstr-1-even-though-no-transactions-solution-to-resolve-you-have-no-summary-to-submit-gstr-1-error/