Не работают POST-запросы в C#

В web-приложении работает Get-запрос, однако не работает Post-запрос.

using Jint;
using Microsoft.AspNetCore.Mvc;
using System.Data.Common;
using System.Data;
using System.Data.SQLite;
using System;
using Microsoft.AspNetCore.Mvc.Rendering;
using static System.Net.Mime.MediaTypeNames;
using Microsoft.AspNetCore.Http;
using System.Web;
using System.Net.Http;
using System.Net;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.Map("/Home", async (context) =>
{
    await context.Response.WriteAsync("You are in HOME page");
});

app.MapGet("/Product", async (context) =>
{
    await context.Response.WriteAsync("You are in PRODUCT page");
});

app.MapPost("/Product", async (context) =>
{
    await context.Response.WriteAsync("A new PRODUCT created");
});

app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapRazorPages();

app.Run();