Unity 2017.1.1f1 problem building webGl game

I build my game Prize Poker to android and everything works well. But when I change to WebGL there is error and unity don’t build anything. Here is errors.
[102195-error1.txt|102195]
[102196-error2.txt|102196]

I don’t understand what is a problem. Why unity cant build WebGL version of Prize Poker?

You should remove Firebase from the WebGL version of it.