message: Fix share community for guests
diff: @@ -34,6 +34,7 @@ import GroupStore from '../../stores/GroupStore';
  import FlairStore from '../../stores/FlairStore';
  import { showGroupAddRoomDialog } from '../../GroupAddressPicker';
  import {makeGroupPermalink, makeUserPermalink} from "../../matrix-to";
  +import {Group} from "matrix-js-sdk";
  const LONG_DESC_PLACEHOLDER = _td(
  `<h1>HTML for your community's page</h1>
  @@ -569,7 +570,7 @@ export default React.createClass({
  _onShareClick: function() {
  const ShareDialog = sdk.getComponent("dialogs.ShareDialog");
  Modal.createTrackedDialog('share community dialog', '', ShareDialog, {
  - target: this._matrixClient.getGroup(this.props.groupId),
  + target: this._matrixClient.getGroup(this.props.groupId) || new Group(this.props.groupId),
  });
  },
  