⨯ Unable to compile TypeScript: src/ContractMsgport.ts(70,17): error TS2365: Operator '+' cannot be applied to types 'bigint' and '1'. src/ContractMsgport.ts(141,12): error TS2365: Operator '+' cannot be applied to types 'bigint' and '1'. src/ContractMsgport.ts(142,15): error TS2365: Operator '+' cannot be applied to types 'bigint' and '1'.