A PHP Error was encountered

Severity: 8192

Message: trim(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: database/DB_query_builder.php

Line Number: 1204

Backtrace:

File: /home/u167805726/domains/mitkartindia.com/public_html/application/models/Category_model.php
Line: 70
Function: order_by

File: /home/u167805726/domains/mitkartindia.com/public_html/application/controllers/Products.php
Line: 115
Function: get_categories

File: /home/u167805726/domains/mitkartindia.com/public_html/index.php
Line: 315
Function: require_once