Gstr-1 uploading error for decryption / decoding faile

Viren Soni (Accounts Manager) (27 Points)

13 December 2017  

While uploading json file for GSTR-1 (json generated from GST Tool 2.1 version), error appears as below:

" Decryption/Decoding failed"

How to resolve error ??
is there any new GST tool coming ?

Kindly help