A PHP Error was encountered

Severity: Notice

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

Filename: account/performance.php

Line Number: 247

Backtrace:

File: /home/trongjai/domains/trongjai.com/public_html/application/views/account/performance.php
Line: 247
Function: _error_handler

File: /home/trongjai/domains/trongjai.com/public_html/application/libraries/Packfunction.php
Line: 39
Function: view

File: /home/trongjai/domains/trongjai.com/public_html/application/controllers/account/Product.php
Line: 140
Function: packViewAccount

File: /home/trongjai/domains/trongjai.com/public_html/index.php
Line: 315
Function: require_once