Problem to create room for multiuser chat

[Mrinmoy Aich]

I am trying to implement a multiuser chat environment in my IM project but
when I try to create a room for multiuser calling create() method from
client side , gives an error showing "no response from server". Though I
have already added MUCModule to my xmppserver object.
       Please help me to overcome this problem and if I missed out any
configuration of server settings please let me know.
        Server api:Vysper
        Client Api:Smack

here is my server code

 public static void main(String[] args) throws Exception {
        String keystorePath;
        String keystorePassword;
            keystorePath = "src/s2s/bogus_mina_tls.cert";
            keystorePassword = "boguspw";

        XMPPServer server = new XMPPServer("server.net
");//localServer.getDomain());
        Entity localUser = EntityImpl.parseUnchecked("ad...@server.net");
        StorageProviderRegistry providerRegistry = new
MemoryStorageProviderRegistry();
        final AccountManagement accountManagement = (AccountManagement)
providerRegistry
        .retrieve(AccountManagement.class);

        if (!accountManagement.verifyAccountExists(localUser)) {
            accountManagement.addUser(localUser, "password");
        }

        // S2S endpoint
        server.addEndpoint(new S2SEndpoint());

        // C2S endpoint
        server.addEndpoint(new TCPEndpoint());

        server.setStorageProviderRegistry(providerRegistry);
        server.setTLSCertificateInfo(new File(keystorePath),
keystorePassword);

        server.start();


     server.addModule(new SoftwareVersionModule());
     server.addModule(new EntityTimeModule());
     server.addModule(new VcardTempModule());
     server.addModule(new XmppPingModule());
     server.addModule(new PrivateDataModule());
     server.addModule(new AdhocCommandsModule());
     server.addModule(new InBandRegistrationModule());
     server.addModule(new MUCModule());

        ServerRuntimeContext serverRuntimeContext =
server.getServerRuntimeContext();

        Thread.sleep(2000);
}