C# MVC 5 Multiple routes not working server

I have a project that I tried to make the mapping "short" for the Urls to look beautiful.

In my environment it is working, however when publishing to the server it gives the error below.

Url my site: www.papodealemao.com.br

My Routes

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.MapRoute(
        name: "Pagina",
        url: "pagina/{id}",
        defaults: new { controller = "Principal", action = "Index", id = "1" }
    );

    routes.MapRoute(
        name: "Secao",
        url: "Secao/{id}",
        defaults: new { controller = "Blog", action = "Secao" }
    );

    routes.MapRoute(
        name: "Categoria",
        url: "Categoria/{id}",
        defaults: new { controller = "Blog", action = "Categoria" }
    );

    routes.MapRoute(
        name: "PorData",
        url: "PorData/{id}",
        defaults: new { controller = "Blog", action = "PorData" }
    );

    routes.MapRoute(
        name: "Artigo",
        url: "artigo/{id}",
        defaults: new { controller = "Blog", action = "Artigo" }
    );

    routes.MapRoute(
        name: "Tag",
        url: "Tag/{id}",
        defaults: new { controller = "Blog", action = "Tag" }
    );

    routes.MapRoute(
        name: "Default",
        url: "{controller}/{action}/{id}",
        defaults: new { controller = "Principal", action = "Index", id = UrlParameter.Optional }
    );
}

Error

Multiple types were found that match the controller named 'Blog'. This can happen if the route that services this request ('artigo/{id}') does not specify namespaces to search for a controller that matches the request. If this is the case, register this route by calling an overload of the 'MapRoute' method that takes a 'namespaces' parameter.

The request for 'Blog' has found the following matching controllers:
PapoDeAlemao.Controllers.BlogController
blog.Controllers.BlogController

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.InvalidOperationException: Multiple types were found that match the controller named 'Blog'. This can happen if the route that services this request ('artigo/{id}') does not specify namespaces to search for a controller that matches the request. If this is the case, register this route by calling an overload of the 'MapRoute' method that takes a 'namespaces' parameter.

The request for 'Blog' has found the following matching controllers:
PapoDeAlemao.Controllers.BlogController
blog.Controllers.BlogController

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