A PHP Error was encountered

Severity: Notice

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

Filename: models/Sitemodel.php

Line Number: 1168

Backtrace:

File: /home/taxtree.com/public_html/office/application/models/Sitemodel.php
Line: 1168
Function: _error_handler

File: /home/taxtree.com/public_html/office/application/controllers/Home.php
Line: 410
Function: get_new_company_and_bookkeeping_price

File: /home/taxtree.com/public_html/office/application/controllers/Home.php
Line: 120
Function: index

File: /home/taxtree.com/public_html/office/index.php
Line: 316
Function: require_once