Cart2Quote Quotations error: Element 'referenceBlock', attribute 'class': The attribute 'class' is not allowed

Question

• I got an error after installing cart2Quote free
• (Magento\Framework\Config\Dom\ValidationException): Element 'referenceBlock', attribute 'class': The attribute 'class' is not allowed.
• i am using magento 2.2.7 Please help!

Answer 1

There are only two allowed attributes for reference blocks.

remove

display

Search for referenceBlock in your cart2quote module and remove the class attribute from referenceBlock element.

Flush your Magento cache php bin/magento c:f and check.