Getting the error account is not authorized to trade

All of a sudden I get the message of “account is not authorized to trade” after weeks of successful paper trade in my Java app and Postman.

I tried to look here https://status.alpaca.markets/ but everything seems alright for now.
Does anyone else gets this?

Environment

Language
Java 11 or Postman

Problem

Summary
Getting the error “account is not authorized to trade”.

Paper or Live Tradng?
Paper

Example Code
Post request to https://paper-api.alpaca.markets/v2/orders