Error pada bagian login/auth

[isarohmadan]

****### Error pada bagian header 404 page not found
404 Page Not Found
The page you requested was not found.

[Sushi4Lunch]

A PHP Error was encountered
Severity: 8192

Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 132

Backtrace:

File: D:\xampp\htdocs\perpus-ci3-master\application\controllers\Login.php
Line: 6
Function: __construct

File: D:\xampp\htdocs\perpus-ci3-master\index.php
Line: 315
Function: require_once

[Agnestia]

kak kenapa saya ga bisa buka ya
Not Found
The requested URL was not found on this server.

Apache/2.4.56 (Win64) OpenSSL/1.1.1t PHP/8.2.4 Server at localhost Port 80

udah aktifin xampp mysql sama apache
trimakasi