如何解决此错误？xcode生成的项目Swift.h错误

如何解决这个错误？使用Xcode 11.2

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谢谢大家!

这是混合编译的问题 快速，C++ 加

在C++ .h文件

SWIFT_CLASS("_TtC12palaceCookie18OrangeExchangeUtil")
@interface OrangeExchangeUtil : NSObject <SKPaymentTransactionObserver, SKProductsRequestDelegate>
- (nonnull instancetype)init OBJC_DESIGNATED_INITIALIZER;
- (void)productsRequest:(SKProductsRequest * _Nonnull)request didReceiveResponse:(SKProductsResponse * _Nonnull)response;
- (void)paymentQueue:(SKPaymentQueue * _Nonnull)queue updatedTransactions:(NSArray<SKPaymentTransaction *> * _Nonnull)transactions;
@end}

import Foundation
import StoreKit

class OrangeExchangeUtil: NSObject, SKProductsRequestDelegate, SKPaymentTransactionObserver {

@protocol SKPaymentTransactionObserver;
@protocol SKProductsRequestDelegate;