database error

[mihaijoldis]

I'm getting this error but i can't figure it out why its happening

[17-Nov-2016 12:39:04 UTC] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE `id` = 21' at line 1 for query UPDATE `wp_wpsc_purchase_logs` SET  WHERE `id` = 21 made by require('D:\MAMP\htdocs\dev-plugins\wp-blog-header.php'), require_once('D:\MAMP\htdocs\dev-plugins\wp-load.php'), require_once('D:\MAMP\htdocs\dev-plugins\wp-config.php'), require_once('D:\MAMP\htdocs\dev-plugins\wp-settings.php'), do_action('init'), wpsc_submit_checkout, do_action('wpsc_submit_checkout'), wpec_lic_set_renewal_flag, WPSC_Purchase_Log->save

I think it comes from here somehow
https://github.com/wp-e-commerce/wpec-licensing/blob/master/includes/renewals.php#L239-L241