A PHP Error was encountered

Severity: Notice

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

Filename: components/header.php

Line Number: 15

Backtrace:

File: /home2/eletro11/domains/eletro11.com.br/public_html/application/views/components/header.php
Line: 15
Function: _error_handler

File: /home2/eletro11/domains/eletro11.com.br/public_html/application/views/landing/template.php
Line: 33
Function: view

File: /home2/eletro11/domains/eletro11.com.br/public_html/application/libraries/Template.php
Line: 15
Function: view

File: /home2/eletro11/domains/eletro11.com.br/public_html/application/controllers/Carrinho.php
Line: 20
Function: load

File: /home2/eletro11/domains/eletro11.com.br/public_html/index.php
Line: 315
Function: require_once