A PHP Error was encountered
Severity: Warning
Message: Trying to access array offset on value of type null
Filename: templates/navigation.php
Line Number: 20
Backtrace:
File: /var/www/html/na_project/application/views/templates/navigation.php
Line: 20
Function: _error_handler
File: /var/www/html/na_project/application/views/templates/header.php
Line: 70
Function: include
File: /var/www/html/na_project/application/core/NA_Controller.php
Line: 46
Function: view
File: /var/www/html/na_project/application/controllers/Login.php
Line: 36
Function: output
File: /var/www/html/na_project/index.php
Line: 316
Function: require_once