func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {         print("sub-update\(transactions.count)")         guard let fobj = transactions.first else { return }                      switch fobj.transactionState {         case .purchased:             print("sub-purchased ")             DispatchQueue.main.asyncAfter(deadline: .now() + 1) {                 self.finsihTrans(trans: transactions)             }         case .restored:             print("sub-restored")             finsihTrans(trans: transactions)         case .failed:             print("sub-failed ")             finsihTrans(trans: transactions)         case .purchasing:             print("sub-purchaing")         default:             finsihTrans(trans: transactions)         }     }          func finsihTrans(trans: [SKPaymentTransaction]) {         for t in trans {             print("sub-finished \(t.transactionIdentifier)-state=-\(t.transactionState)")             SKPaymentQueue.default().finishTransaction(t)         }     }      in iOS13 ,when a user click subscribe button, func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) will callback a purchasing transaction,after user input password, call back a purchased transaction. However,in iOS14.0.1 ,after a user click subcribe button, only callback a restored transaction,that lead subscribe fail alway.Has anyone encountered this kind of problem, please help