Originally Posted by Dougrun
Upgrade not allowed
X-Cart v5.4 requires MySQL version 5.7.7 or better. Please update the MySQL version installed on your server before you proceed.
I'm on Mariadb 10.3.16.
In 18.104.22.168 we will have a fix which allows upgrading the store with MariaDB which provide a version.
22.214.171.124 will be released in merchant wave in September. Please contact our support team and they will be able to apply the hotfix to your store. Keep in mind that 5.4.0.x is still not available in merchant wave to upgrade from 5.3.6.x.