A PHP Error was encountered

Severity: Notice

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

Filename: models/Auth_m.php

Line Number: 16

Backtrace:

File: /var/vhosts/devforge-desktop.otelms.com/html/mobile/application/models/Auth_m.php
Line: 16
Function: _error_handler

File: /var/vhosts/devforge-desktop.otelms.com/html/mobile/application/controllers/Hk.php
Line: 11
Function: is_logined

File: /var/vhosts/devforge-desktop.otelms.com/html/mobile/index.php
Line: 322
Function: require_once