[DURACOM-344] remove hardcoded paths

Author: FrancescoMolinaro

server.ts

@@ -58,6 +58,7 @@ import {
   REQUEST,
   RESPONSE,
 } from './src/express.tokens';
+import { getForbiddenRoute, getPageNotFoundRoute, getPageInternalServerErrorRoute } from "./src/app/app-routing-paths";
 
 /*
  * Set path for the browser application's dist folder
@@ -418,11 +419,11 @@ function cacheAndErrorStatusCheck(req, res, next) {
  * @param res
  */
 function setRequestErrorStatus(req, res) {
-  if (req.url === '/500') {
+  if (req.url === getPageInternalServerErrorRoute()) {
     res.status(500)
-  } else if (req.url === '/404') {
+  } else if (req.url === getPageNotFoundRoute()) {
     res.status(404)
-  } else if (req.url === '/403') {
+  } else if (req.url === getForbiddenRoute()) {
     res.status(403)
   }
 }