A PHP Error was encountered

Severity: Notice

Message: Undefined property: stdClass::$product_id

Filename: models/Licenses.php

Line Number: 267

Backtrace:

File: /home/multitablepro/public_html/application/models/Licenses.php
Line: 267
Function: _error_handler

File: /home/multitablepro/public_html/application/controllers/Api.php
Line: 29
Function: validate_license

File: /home/multitablepro/public_html/public/index.php
Line: 323
Function: require_once

{"result":[],"errors":["Product for the license was not found. Contact support!"]}