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I am trying a simple websocket application using Jakarta EE9 and JSF 3.0 on a glassfish 6.2.5 server. When I run it, messages are not received, when the server shuts down the following is printed in the web console:

WebSocket connection to 'ws://localhost:8080/folder/jakarta.faces.push/someChannel?c10aaeaa-2007-4a19-96bb-630f88285f6c' failed: 
t.open @ jsf.js.xhtml?ln=jakarta.faces:1

My xhtml is the following:

<!DOCTYPE html
        PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://xmlns.jcp.org/jsf/html"
      xmlns:f="http://xmlns.jcp.org/jsf/core">
<h:head>
</h:head>
<h:body>
    <div class="Home-Page">
        <div class="Home-window">
            <h:commandButton
                    id="sendMessage"
                    type="submit"
                    action="#{msgBean.sendMessage()}" value="Send Message">
                <f:ajax />
            </h:commandButton>
            <f:websocket channel="someChannel" onmessage="function test(m){console.log(m);}" >
            </f:websocket>
            
        </div>
    </div>
</h:body>
</html>

And I use the following bean:

    import jakarta.faces.push.Push;
    import jakarta.faces.push.PushContext;
    import jakarta.faces.view.ViewScoped;
    import jakarta.inject.Inject;
    import jakarta.inject.Named;
    @Named("msgBean")
    @ViewScoped
    public class MsgBeanimplements java.io.Serializable{
    
        @Inject
        @Push
        private PushContext someChannel;
        public void sendMessage() {
            someChannel.send("hello");
        }

   }

My faces-config is like this:

<faces-config
        xmlns="https://jakarta.ee/xml/ns/jakartaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee
        https://jakarta.ee/xml/ns/jakartaee/web-facesconfig_3_0.xsd"
        version="3.0">

</faces-config>

And web-config:

<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
         version="5.0">

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

    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>jakarta.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.xhtml</url-pattern>
    </servlet-mapping>

</web-app>

Does anyone know how to solve this? I have tried adding a FakeEndPoint like recommended here, but then I get the following error:

Cannot invoke "jakarta.servlet.FilterRegistration$Dynamic.setAsyncSupported(boolean)" because "reg" is null
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