Fatal error: Uncaught Error: Call to a member function get_stock_quantity() on bool in /home/customer/www/devon-firewood.co.uk/public_html/wp-content/plugins/custom-stock-quantity-multiplier-for-woocommerce/custom-stock-quantity-multiplier-for-woocommerce.php:230 Stack trace: #0 /home/customer/www/devon-firewood.co.uk/public_html/wp-includes/class-wp-hook.php(309): WC_Variation_Stock_Multiplier::ep__check_validation_on_product_page(true, 17441, 1, '') #1 /home/customer/www/devon-firewood.co.uk/public_html/wp-includes/plugin.php(191): WP_Hook->apply_filters(true, Array) #2 /home/customer/www/devon-firewood.co.uk/public_html/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(904): apply_filters('woocommerce_add...', true, 17441, 1, '', Array) #3 /home/customer/www/devon-firewood.co.uk/public_html/wp-content/plugins/woocommerce/includes/class-wc-form-handler.php(790): WC_Form_Handler::add_to_cart_handler_variable(17441) #4 /home/customer/www/devon-firewood.co.uk/public_html/wp-includes/class-wp-hook.php(307): in /home/customer/www/devon-firewood.co.uk/public_html/wp-content/plugins/custom-stock-quantity-multiplier-for-woocommerce/custom-stock-quantity-multiplier-for-woocommerce.php on line 230