page not loading when I add full else statement

var Profile = require("./profile.js");
var renderer = require("./renderer.js");
var querystring = require("querystring");

var commonHeaders = {'Content-Type': 'text/html'};

function home(request, response){
    // if url  === '/' && GET
    if(request.url === "/"){
        if(request.method.toLowerCase() === "GET") {
            // show search field
          response.writeHead(200, commonHeaders);
          renderer.view("header", {}, response);
          renderer.view("search", {}, response);
          renderer.view("footer", {}, response);
          response.end();
        }else {
            // if url === / && Post

            //get the post data from body
            request.on("data", function(postBody){
                //extract username
                var query = querystring.parse(postBody.toString());
                response.writeHead(303, {"Location": "/" + query.username});
                response.end();
            });

        }
    }
}


// Handle HTTP route GET /:username i.e. /carlakroll
function user(request, response){
    //if url == "/...."
    var username = request.url.replace("/", "");
    if(username.length > 0){
        response.writeHead(200, commonHeaders);
        response.write("header", {}, response);

    //get JSON from Treehouse
        var studentProfile = new Profile(username);
    // on "end"
    studentProfile.on("end", function(profileJSON){
            // show profile

            //store the values which we need
            var values = {
                avatarUrl: profileJSON.gravatar_url,
                username: profileJSON.profile_name,
                badges: profileJSON.badges.length,
                javascript: profileJSON.points.JavaScript
            }
            //Simple Response
            //response.write(values.username + " has " + values.badges + " badges\n");
            renderer.view("header", {}, response);
            renderer.view("profile", values, response);
            renderer.view("footer", {}, response);
            response.end();
        });

        // on "error"
        studentProfile.on("error", function(error){
            // show error
            renderer.view("header", {}, response);
            renderer.view("error", {errorMessage: error.message}, response);
            renderer.view("search", {}, response);
            renderer.view("footer", {}, response);
            response.end();
        });
    }
}

module.exports.home = home;
module.exports.user = user;