PreparePaymentResponseModel::$Status must not be accessed before initialization

Sorry, it was my mistake. I tried to connect to the test.barion.com server in Prod mode.

The PreparePaymentResponseModel result if I try to connect to non-existent acceptance place doesn't have Status property. The exception comes from this situation.

The attached patch allows more elegant debugging

The issue still exists if I don't provide a valid account or POSKey. The patch seems to fix the error then.

Automatically closed - issue fixed for 2 weeks with no activity.