Error Session pada Code Igniter

PERMASALAHAN

Error ini terjadi ketika saya melakukan migrasi dari PHP5 ke PHP7.  Cek deh apakah sama error nya.

A PHP Error was encountered

Severity: Warning

Message: mkdir(): Invalid path

Filename: drivers/Session_files_driver.php

Line Number: 117

Backtrace:

File: C:\xampp\htdocs\ci-test\application\controllers\login.php
Line: 7
Function: __construct

File: C:\xampp\htdocs\ci-test\index.php
Line: 292
Function: require_once

SOLUSI

Buka file config.php, kemudian ubah di baris 385

$config['sess_save_path'] = NULL;

jadi

$config['sess_save_path'] = sys_get_temp_dir();

Done.