BlazorOpenApi/Demo/Program.cs

using Microsoft.AspNetCore.Hosting.StaticWebAssets;
using MudBlazor.Services;

var builder = WebApplication.CreateBuilder(args);

StaticWebAssetsLoader.UseStaticWebAssets(builder.Environment, builder.Configuration);

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

builder.Services.AddControllers();
//builder.Services.AddSwaggerGen(c =>
//{
//    c.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });
//});

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.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();
//app.UseSwagger();

//app.UseReDoc(c =>
//{
//    c.DocumentTitle = "REDOC API Documentation";
//    c.SpecUrl = "/swagger/v1/swagger.json";
//});

app.MapBlazorHub();
app.MapFallbackToPage("/_Host");

app.Run();