A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Welcome.php

Line Number: 278

Backtrace:

File: /var/www/api/application/controllers/Welcome.php
Line: 278
Function: _error_handler

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

{"status":1,"message":"Success","buyorder":[],"sellorder":[]}