diff --git a/backend/app/plugins/wiaas/includes/class-wiaas-checkout.php b/backend/app/plugins/wiaas/includes/class-wiaas-checkout.php
index 5bd6bb9..0cd07f4 100644
--- a/backend/app/plugins/wiaas/includes/class-wiaas-checkout.php
+++ b/backend/app/plugins/wiaas/includes/class-wiaas-checkout.php
@@ -24,7 +24,7 @@ class Wiaas_Checkout {
 				$item_id =  $item['data']->get_id();
 				if (wc_pb_is_bundle_container_cart_item($item) && 
 					(Wiaas_Package_Status::get_package_status($item_id) !== Wiaas_Package_Status::AVAILABLE)){
-						return false;
+						throw new Exception('Package ' . $item['data']->get_title() . ' cannot be purchased at the moment');
 				}	
 			}