SwiftyStoreKit.purchaseProduct method always return 'unknown error'

## Question
Please, who can help me? What is the problem?
: Payment completed with error: Error Domain=ASDErrorDomain Code=500 "Unhandled exception" UserInfo={NSUnderlyingError=0x280070270 {Error Domain=AMSErrorDomain Code=100 "Authentication Failed" UserInfo={NSLocalizedFailureReason=The verify credentials call failed., NSLocalizedDescription=Authentication Failed, NSUnderlyingError=0x2800703c0 {Error Domain=AMSErrorDomain Code=0 "Authentication Failed" UserInfo={NSLocalizedDescription=Authentication Failed, NSLocalizedFailureReason=Encountered an unrecognized authentication failure.}}}}, NSLocalizedFailureReason=An unknown error occurred, NSLocalizedDescription=Unhandled exception}