CodeIgniter redirect to localhost after online migration

My question is what is your default controller? Request to http://primodebug.esy.es/Calendario always redirect to http://localhost/Calendario/user/login. Try RECHECK YOUR DEFAULT CONTROLLER IF YOU HAVE CONDITION THAT CAUSE USER TO REDIRECT TO LOGIN PAGE AND DOES THE REDIRECTION LINK IS CORRECT. Put index.php & assets in your public_html. SYSTEM AND APPLICATION FOLDER you can put in same directory as index.php but for safety put in below directory of index.php

Keep calm.