A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type null

Filename: helpers/funcoes_helper.php

Line Number: 11

Backtrace:

File: /var/www/html/balneabilidade_lab/application/helpers/funcoes_helper.php
Line: 11
Function: _error_handler

File: /var/www/html/balneabilidade_lab/application/views/menu.php
Line: 3
Function: is_logged_in

File: /var/www/html/balneabilidade_lab/application/views/header.php
Line: 60
Function: view

File: /var/www/html/balneabilidade_lab/application/views/usuario/login.php
Line: 8
Function: view

File: /var/www/html/balneabilidade_lab/application/controllers/administracao/Usuario.php
Line: 82
Function: view

File: /var/www/html/balneabilidade_lab/index.php
Line: 315
Function: require_once