错误信息

• Notice: Only variables should be passed by reference 在 commerce_fixed_quantity_commerce_product_calculate_sell_price_line_item_alter() (行 195 在 sites/all/modules/commerce_fixed_quantity/commerce_fixed_quantity.module).
• Notice: Only variables should be passed by reference 在 commerce_fixed_quantity_commerce_product_calculate_sell_price_line_item_alter() (行 195 在 sites/all/modules/commerce_fixed_quantity/commerce_fixed_quantity.module).