diff --git a/includes/rules-shipping-method.php b/includes/rules-shipping-method.php index 120ab72135846c07cba12c3822e992f6819707df..f44293cc928b77a1eef0fc87d17710eefa2df95f 100644 --- a/includes/rules-shipping-method.php +++ b/includes/rules-shipping-method.php @@ -142,7 +142,7 @@ class Shipping_by_Rules extends WC_Shipping_Method { * @param mixed $package * @return void */ - public function calculate_shipping( $package ) { + public function calculate_shipping( $package = array()) { $methods = $this->helper->get_rule_shipping_methods(); foreach ($methods as $method) {