final response = await http.get("http:/abc/posts/get");
if (response.statusCode == 200) {
        list = json.decode(response.body) as List;
        firstList = json.decode(response.body) as List;
      setState(() {
        isLoading = false;
      });
    } else {
      Toast.show('Failed to load data', context);
      throw Exception('Failed to load data');
    }