A PHP Error was encountered

Severity: 8192

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

Filename: models/Product_model.php

Line Number: 247

Backtrace:

File: /home/lilj9s9ph51h/public_html/truemedix/models/Product_model.php
Line: 247
Function: json_decode

File: /home/lilj9s9ph51h/public_html/truemedix/controllers/Pages.php
Line: 138
Function: get_related

File: /home/lilj9s9ph51h/public_html/index.php
Line: 316
Function: require_once