Colyseus can't connect to the room from mobile device

Extensions
#1

Hi all, I run server with Colyseus, and it works fine on my desktop, but when I try to play the game on a mobile device I am unable to connect to the room. Just strange error I see is this:

image
image369×800 56.5 KB

my code is:

        try {
            this.room = await this.client.joinOrCreate(
                "main_menu"
            );

            const { room } = this;

            room.onMessage("error", function () {
                console.log(arguments);
            });

            node.on(RegistrationEvent.type, this.onRegistration, this);
            node.on(LoginEvent.type, this.onLogin, this);

            room.onMessage("login_sucess", this.onLoginSucess);
        } catch (error) {
            console.error(error);
        }

What could be the case of this? thanks.

#2

So I found the solution.
You should put Pv4 Address in the serverURL field.
I can find it windows by command line: cmd.