Major issues after upgrading to 3.29.0

Hi, My entire app is failing to build and there are several errors after flutter upgrading to 3.29.0

There is an issue in lib/main.dart

lib/main.dart:74:32: Error: The argument type 'RouteMatchBase' can't be assigned to the parameter type 'RouteMatch?'.

getRoute now returns RouteMatchBase and not RouteMatch

late GoRouter _router;
  String getRoute([RouteMatch? routeMatch]) {
    final RouteMatch lastMatch =
        routeMatch ?? _router.routerDelegate.currentConfiguration.last;
    final RouteMatchList matchList = lastMatch is ImperativeRouteMatch
        ? lastMatch.matches
        : _router.routerDelegate.currentConfiguration;
    return matchList.uri.toString();
  }

  List<String> getRouteStack() =>
      _router.routerDelegate.currentConfiguration.matches
          .map((e) => getRoute(e))
          .toList();