Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
After migrating Magento. I have error only in checkout and checkout\cart Element 'referenceBlock', attribute 'ifconfig': The attribute 'ifconfig' is not allowed. exception
Check if any of your modules has the attribute ifconfig inside element referenceBlock you can look in checkout_index_index.xml or checkout_cart_index.xml files.
Required, but never shown