JBWEB000048: The servlet or filters that are being used by this request do not support async

Issue

• We see the following exception trying to use async servlets:

ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/].[Servlet]] JBWEB000236: Servlet.service() for servlet Push Servlet threw exception: java.lang.IllegalStateException: JBWEB000048: The servlet or filters that are being used by this request do not support async operation
    at org.apache.catalina.connector.Request.startAsync(Request.java:3205) [jbossweb-7.5.9.Final-redhat-1.jar:7.5.9.Final-redhat-1]
    at org.apache.catalina.connector.RequestFacade.startAsync(RequestFacade.java:936) [jbossweb-7.5.9.Final-redhat-1.jar:7.5.9.Final-redhat-1]