holoc
Welcome to the forum 🙂
Unfortunately, you generally cannot run two applications on the same port if they run on the same system.
You can setup a proxy to serve 2 web applications on the same port to the outside world - but if both applications run on the same system, they still require 2 ports facing the proxy server.
In REI3 you can simply change the port in the config.json
file and then restart the service. Then there is no conflict.
The '#' in the URL is a placeholder used by the REI3 web application - this is required for the web application to run and cannot be changed.
Unfortunately you will need to use unique ports for each application running on the same system - there is no way around that.