PHP Warning: Undefined variable $variation_id

Hello again,

So I have a client site whose logs are full of this warning. It seems that it’s breaking the checkout process for our wholesale clients when using credit card.

PHP Warning: Undefined variable $variation_id in /home/website/public_html/wp-content/plugins/whols/includes/functions.php on line 1287

Version is 2.4.6 – Line 1287 is the bolded line here:

   function whols_is_wholesale_priced( $product_id, $qty ){
$product_data = wc_get_product($product_id);
 if($product_data->is_type('simple')){
        $product_id     = $product_data->get_id();
        $variation_id   = '';
    } elseif( $product_data->is_type('variation') ){
        $product_id     = $product_data->get_parent_id();
        $variation_id   = $product_data->get_id();
    }

    $wholesale_status    = whols_is_on_wholesale( $product_id, $variation_id );
    $enable_this_pricing = $wholesale_status['enable_this_pricing'];
    $price_value         = $wholesale_status['price_value'];
    $minimum_quantity    = $wholesale_status['minimum_quantity'];

    if( whols_is_wholesaler(get_current_user_id()) && $enable_this_pricing && $price_value &&  $qty >= $minimum_quantity  ){
        // Returned array in case we need to pass any other data in the future
        return array(
            'wholesale_priced' => 'yes'
        );
    }

    return false;
}