web.xml

Agregar

   <context-param>
        <param-name>javax.faces.ENABLE_CDI_RESOLVER_CHAIN</param-name>
        <param-value>true</param-value>
    </context-param>    
    <context-param>
        <param-name>javax.faces.ENABLE_WEBSOCKET_ENDPOINT</param-name>
        <param-value>true</param-value>
    </context-param>