I am facing this error in the admin side when viewing the orders.
Order View Information Changes have been made to this section that have not been saved. This tab contains invalid data. Please resolve this before saving.
I am getting this error on that page.
<b>Fatal error</b>: Uncaught Error: Call to a member function getValue() on null in /home/oherron/public_html/vendor/magento/module-sales/view/adminhtml/templates/order/view/info.phtml:162