If the create_session.js fails the most likely reason is that the Lightstreamer server is not listening on the specified port; this can happen if the startup procedure fails or never completes.
But in your case, that involve remote Adapters, as long as a connection to a remote Metadata Adapter is still missing, all client requests will be refused.

So, please check if the Lightstreamer server is started normally and that all the remote Adapters (port: 6650, 6651, 6652) are connected properly. If it is the case you can also post here some snippets of server log.

Regards.