err: GameServices does not have web implementation.

[SimpleDm]

Whatever I do, I meet "GameServices does not have web implementation.", Can you tell me what it might be?

(I don't use ionic if that's important.)

import { Plugins } from '@capacitor/core';
import '@openforge/capacitor-game-services';
import { GameServicesPlugin } from '@openforge/capacitor-game-services';

const GameServices = Plugins.GameServices as GameServicesPlugin;
GameServices.signIn();