I have attached a patch to the Jira. Some Context:

The error page of the jmx-console spits out JSP source code.

http://127.0.0.1:8080/jmx-console/DisplayOpResult

HTTP Status 500 -

type Exception report
message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /displayOpResult.jsp at line 12

9:
10:
11:
12: <jsp:useBean id='opResultInfo' type='org.jboss.jmx.adaptor.control.OpResultInfo' scope='request'/>
13:
14: