I do not know much English. sorry.
I want to make a membership system for my game.
I used firebase for my old game. It was uneventful.
But in my new game I add a multiplayer object.
FireBase and multiplayer objects are not added at the same time.
I get the javascript error when adding.
Picture of error:
How can i fix it?
Is there a way to make another membership system if I can not fix it?not fix it?