A PHP Error was encountered

Severity: Notice

Message: Undefined variable: user_id

Filename: frontend/header.php

Line Number: 257

Backtrace:

File: /home/jawara2024/public_html/peduli/application/views/frontend/header.php
Line: 257
Function: _error_handler

File: /home/jawara2024/public_html/peduli/application/views/frontend/main.php
Line: 221
Function: view

File: /home/jawara2024/public_html/peduli/application/controllers/Pages.php
Line: 138
Function: view

File: /home/jawara2024/public_html/peduli/index.php
Line: 297
Function: require_once