Unable to send team invitation in flutter

  void inviteToBecomeManager(User user) async{
    await client_aw.Teams(ClientDatabase.client!).createMembership(
      teamId: 'managers',
      roles: [''],
      email: user.email,
      userId: user.$id,
      phone: user.phone,
      name: user.name,
      url: '$link?projectId=$project&endpoint=$endpoint}'
    ).then((value) {
      f.showDialog(
          barrierDismissible: true,
          context: current, builder: (co){
        return const Text('invitationsent').tr();
      });
    }).onError((client_aw.AppwriteException error, stackTrace) {
      if(kDebugMode){
        print('====================================================');
        print('error sending invitation');
        print('type: ${error.type}');
        print('code: ${error.code}');
        print('message: ${error.message}');
        print('response: ${error.response}');
        print('stacktrace: $stackTrace');
        print('====================================================');

      }
    });
  }