ASP.NET Core Paging - PagedList.Core

I am creating an ASP.NET core study project, and when using the PagedList.Core paging library, the following error is occurring when running the dotnet run command:

  

Startup.cs (49.35): error CS0246: The name of the type or namespace "IActionContextAccessor" can not be found (is it missing a using directive or an assembly reference?) [C: \ projects \ net \ osnet \ osnet.csproj]
  Startup.cs (49,59): error CS0246: The name of the type or namespace "ActionContextAccessor" can not be found (is there a missing directive or an assembly reference?) [C: \ projects \ net \ osnet \ osnet .csproj]

     

The build failed. Correct the build errors and run again.

What could it be?

My method ConfigureServices of file Startup.cs looks like this:

public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<CookiePolicyOptions>(options =>
        {
            // This lambda determines whether user consent for non-essential cookies is needed for a given request.
            options.CheckConsentNeeded = context => true;
            options.MinimumSameSitePolicy = SameSiteMode.None;
        });

        services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

        var connection = Configuration["ConexaoSqlite:SqliteConnectionString"];
        services.AddDbContext<OsNetContext>(options =>
            options.UseSqlite(connection)
        );
        // Add framework services.
        services.AddMvc();
        services.AddSingleton<IActionContextAccessor, ActionContextAccessor>(); // <= Add this

    }