I have this fully functional code deployed on Mainnet. It has been working fine since day of deployment but all of a sudden, I can't seem to execute any write functions on the contract anymore. The error I receive in Remix isn't one I have seen ever

transact to Prediction.transferOwnership errored: [ethjs-query] while formatting outputs from RPC '{"value":{"code":-32603,"data":{"code":-32000,"message":"transaction type not supported"}}}'