In my invoice, I am having problems with a grand total(base) that is always 2 euros for order so the total billed amount of 2 will be subject to tax and shipping. With an error on the at page Dashboard Renevue result negative display. I spent a lot of time trying to find the cause but was still hopeless with this problem. Hope you guys can point me to those who thank you very much. 
- Invoice Grant Total is calculated in \Magento\Sales\Model\Order\Invoice\Total\Grand class, start debugging with this file.Slava– Slava2021-10-08 11:00:34 +00:00Commented Oct 8, 2021 at 11:00
- thank you did reply and I did fix the problem in the file: /var/www/html/designerwholesaleeyewear.com/vendor/magento/module-sales/Model/Order/Invoice.php because our file in function getBaseGrandTotal() missing return $this->getData(self::KEY_BASE_GRAND_TOTAL); so auto $total = 2.BenjaminVu– BenjaminVu2021-10-09 02:47:44 +00:00Commented Oct 9, 2021 at 2:47
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