building project "app_crow.vcxproj" -- FAILED

Question

Included the Additional Directory and everything, still fails.

// app_crow.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include "crow_all.h"
#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
    crow::SimpleApp app;

    CROW_ROUTE(app, "/")([]() {
        return "Hello world";
        });

    app.port(18080).run();
}

Using single header "crow_all.h" library (A Crow Library) It also uses Boost library, I inclued, still I get 1 error stated above

I am running a simple app using a crow framework. Library setting is okay but fails.