Error on create new subscription

Hello there,

That plugin is paid, so I don’t have access to it. However, try adding the following code to your active theme’s functions.php file:

if ( ! function_exists( 'yith_wcaf_commissions_metabox_order_total_fix' ) ) {
    function yith_wcaf_commissions_metabox_order_total_fix( $total, $order ) {
        $total = $order instanceof WC_Order ? $order->get_total() : 0;
        return $total;
    }
    add_filter( 'yith_wcaf_commissions_metabox_order_total', 'yith_wcaf_commissions_metabox_order_total_fix', 99, 2 );
}

Could you check it, please?

Best regards.

Hello there,

Could you confirm for me that the first line of the error has the number 40 at the end like this?

[25-Aug-2025 06:07:03 UTC] PHP Fatal error:  Uncaught Error: Call to a member function get_total() on bool in /home/web01/public_html/wp-content/plugins/yith-woocommerce-affiliates/views/meta-boxes/referral-commissions-metabox.php:40

Let us know.

Best regards.

Hello there,

Please in the line 40 of the following file:

\wp-content\plugins\yith-woocommerce-affiliates\includes\admin\meta-boxes\class-yith-wcaf-order-referral-commissions-meta-box.php

add the following code:

if ( ! $order || ! $order instanceof WC_Order ) {
    return;
}

Could you check it, please?

If it works correctly, we will include that change in the next version of the plugin.

Best regards.

Hello there,
you’re welcome!

We’ve just added the change to the plugin, and it will be available in the next version (3.22.0).

Best regards.