Wordpress 5 + WooCommerce Breaking Changes
WordPress 5 comes with many new features including Gutenberg. There's been much talk about Woocommerce breaking changes with WordPress 5. It's important that you update Woocommerce prior too updating to WordPress 5.
It's always a good idea to create a full backup of your site before performing software updates. For high traffic sites, we recommend building a staging site to perform software updates and testing before implementing new software updates onto your live site. If you need assistance with software updates, don't hesitate to contact us!