A PHP Error was encountered

Severity: Notice

Message: Undefined variable: active_session_id

Filename: controllers/Api.php

Line Number: 1574

Backtrace:

File: /var/www/html/awarathon.com/restapi/application/controllers/Api.php
Line: 1574
Function: _error_handler

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

{"success":false,"message":"Unable to post data either it is empty or not set."}