Been banging my head against this, trying to connect to a room.
When I try connecting to a Room, I get a console log in the web browser that url is not defined. However I know the server is seeing it, as onInit() in the server is called for that room.
Client Repo:
https://github.com/KG204/ff_client
Colyseus connection code is in src/application.js
Server Repo:
https://github.com/KG204/ff
Screenshot of browser:
https://imgur.com/a/9yw9haC