Failed transaction appears in the payment queue when user tries to buy product in sandbox environment

Sometimes when the user tries to buy a product, a failed transaction appears in the payment queue.

When user taps on buy button, the following code is run

func buy(product: SKProduct) {
    let payment = SKPayment(product: product)
    SKPaymentQueue.default().add(payment)
}

Afterwards, the method `paymentQueue(_:updatedTransactions:)` of the registered SKPaymentTransactionObserver is called with a failed transaction.

The error object of the transaction is as follows-

Cannot connect to iTunes Store Error Domain=NSURLErrorDomain Code=-1200 "Cannot connect to iTunes Store" UserInfo={_kCFStreamErrorDomainKey=3, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask<E979C8A8-8B0B-498D-B086-212B6AFF4B3E>.<2>, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, NSErrorFailingURLKey=https://sandbox.itunes.apple.com/WebObjects/MZFinance.woa/wa/inAppBuy, _NSURLErrorRelatedURLSessionTaskErrorKey=("LocalDataTask <E979C8A8-8B9B-498D-B0860212B6AFF4B3E>.<2>"), NSLocalisedDescription=Cannot connect to iTunes Store, NSErrorFailingURLStringKey=https://sandbox.itunes.apple.com/WebObjects/MZFinance.woa/wa/inAppBuy,NSUnderlyingError=0x280ad8060 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, _kCFNetworkCGStreamSSLErrorOriginalValue=-9816, _kCGStreamErrorDomainKey=3, _kCGStreamErrorCodeKey=-9816}}, _kCGStreamErrorCodeKey=-9816}

Can anyone point out how to solve this issue?