I received this error while testing: Error: Module parse failed: Unexpected token (225:15) You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders | } | > renderDialog = () => html` | <div part="container" class="idle-notification-container"> | <div part="header" class="${this._headerVisibility}">