Beginner problem receive sgcmessage javascript

I have a server and client as Delphi VCL.
This all works very well.
Now I have a web application. I built myself some tools within TMS Web Core.
I'm creating a websocket client here.

I get a session ID about the event.
All events of the basis websocket work, but not the events of the protocol (default sgc).
I have included this

     <script src="/sgcWebSockets.js"></script>

     <script src="/esegece.com.js"></script>

and my javascript with

    new sgcws(address)

generated.
Then I set all the events.
All of this is done correctly in the debugger.

But I don't get any events from the sgcProtocol.

Then I adapted the example page from the websockets folder "esegece.com.html" so that it runs with my server. Here too, the open/connected/... events come, but not the protocol events.

Am I making a mistake?
Do I have a problem with my PC?
Is there any further help for javascript?

Thank you for help
Thomas