Using a variable instead of hard coding

Author: Kneatrum

back-end/index.js

@@ -141,7 +141,7 @@ cron.schedule('0 0 * * *', async () => {
 
 app.use("/", general_routes);
 
-app.listen(port, () => {
+app.listen(backEndPort, () => {
     console.log(`Web server listening at http://${backEndHost}:${backEndPort}`);
 });