I am having an issue with order confirmations sending error messages to customers from Magento site after they purchase. The message looks like this:
Error filtering template: Element 'argument': The attribute 'name' is required but missing. Line: 19 Element 'argument': Not all fields of key identity-constraint 'blockReferenceActionArgumentName' evaluate to a node. Line: 19
I need an experienced magento developer to fix this today immediately and find what could be causing it, as well as then being able to re-send the order confirmations to customers who have received the error message, without causing any site outages.