A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "id_telp" on null

Filename: controllers/Welcome.php

Line Number: 579

Backtrace:

File: /var/www/html/application/controllers/Welcome.php
Line: 579
Function: _error_handler

File: /var/www/html/index.php
Line: 315
Function: require_once