Websockets config setting: java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol

Issue

• We see below error in the tomcat logs whilst trying to open the application via Apache:

 java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol
        at org.apache.coyote.ajp.AbstractAjpProcessor.action(AbstractAjpProcessor.java:587)
        at org.apache.coyote.Request.action(Request.java:379)
        at org.apache.catalina.connector.Request.upgrade(Request.java:1886)
        at org.apache.catalina.connector.RequestFacade.upgrade(RequestFacade.java:1114)
        at org.apache.tomcat.websocket.server.UpgradeUtil.doUpgrade(UpgradeUtil.java:231)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:77)