Errors encountered while uploading json the file

no it is error in json file

R/Sir,

We getting error as "Errors encountered while uploading the file" while uploading JSON file of MARCH & APRIL 18 for RFD 01 Refund application on GST portal. The system is not accepted the file uploaded throught GST portal for file ofline utility of RFD01A for the month of Jan 2018 I uploaded without any error. please sir help us to resolve the error.