Youtrack Integration plugin - Invalid handshake response getStatus: 404 Not Found

Hello to everyone,
I'm trying to debug my workflows of my youtrack server (build 2023.1.11071) with the Youtrack Integration plugin, using WebStorm 2023.2 and following the remote debugger guide.

I configured the YouTrack Integration Plugin and tested the connection to the server (without using proxy).

Then i edited a new debug configuration, but when i start it the behavior is the following: some workflows (not all) are copied in the local folder specified in the debug configuration and also a pop up confirms me this, but after few seconds i get this error:

1. Now, i don't think that this is due to the misconfiguration of a reverse proxy, because youtrack server doesn't use a proxy, otherwise to get a connection successful on the test connection, i had to configure a proxy. Am i right?
2. Is possible that exist some bugged workflows that don't allow the debug to attach properly, since some ones are loaded successfully?