A PHP Error was encountered

Severity: Notice

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

Filename: controllers/Bathroom.php

Line Number: 139

Backtrace:

File: /home/bathroo1/public_html/application/controllers/Bathroom.php
Line: 139
Function: _error_handler

File: /home/bathroo1/public_html/index.php
Line: 315
Function: require_once