{"data":{"checkCustomerExist":{"status":false,"message":"You are not a registered customer."}}}

{"errors":[{"message":"Variable \"$mobile_number\" of non-null type \"String!\" must not be null.","locations":[{"line":2,"column":95}]}]}

{"errors":[{"message":"Variable \"$mobile_number\" of non-null type \"String!\" must not be null.","locations":[{"line":2,"column":42}]}]}