While testing bulk sms from postman, I am getting errorCode: "AGW-110" error and message: "Internal Server Error. Consult RC Support." Can I get some help?

While testing bulk sms from postman getting errorCode: "AGW-110" error and message: "Internal Server Error. Consult RC Support." can any help to solve and tried restclient api call in that also getting { "errorCode" : "AGW-110", "message" : "Internal Server Error. Consult RC Support.", "errors" : [ ] }