A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'id' of non-object

Filename: controllers/Lawyer.php

Line Number: 171

Backtrace:

File: /var/www/mywebsite/application/controllers/Lawyer.php
Line: 171
Function: _error_handler

File: /var/www/mywebsite/index.php
Line: 297
Function: require_once