JSP include does not indicate unavailable resource on EAP 7

Issue

• Our JSPs may include other pages, for example:

<jsp:include page="includedpage.html"></jsp:include>

• On EAP 6, the JSP output includes a message indicating what included resources are not found, for example:

The requested resource (/app/includedpage.html) is not available

• We do not see any such message on EAP 7; we just see our application error page instead. How can we identify which included resource was missing?