public void OnPurchaseFailed(Product product, PurchaseFailureReason failureReason)
{
// A product purchase attempt did not succeed. Check failureReason for more detail. Consider sharing
// this reason with the user to guide their troubleshooting actions.
Debug.Log(string.Format("OnPurchaseFailed: FAIL. Product: '{0}', PurchaseFailureReason: {1}", product.definition.storeSpecificId, failureReason));
FirebaseManager.LogCrashlytics(failureReason.ToString());
FirebaseManager.LogException(new Exception("IAP Purchase Failed"));
}