A PHP Error was encountered

Severity: Notice

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

Filename: controllers/Logout.php

Line Number: 69

Backtrace:

File: /var/www/Hippocrat_GreenHR_XXHVXGGV234567644XXXXX/application/controllers/Logout.php
Line: 69
Function: _error_handler

File: /var/www/Hippocrat_GreenHR_XXHVXGGV234567644XXXXX/index.php
Line: 292
Function: require_once