Fatal error: Unsupported operand types: string * float in class-product.php:134

After updating recently, we now get a fatal error:

[03-Dec-2025 09:51:06 UTC] PHP Fatal error:  Uncaught TypeError: Unsupported operand types: string * float in /home/username/public_html/wp-content/plugins/woo-product-bundle/includes/class-product.php:134
Stack trace:
#0 /home/username/public_html/wp-content/plugins/woo-product-bundle/includes/class-product.php(197): WC_Product_Woosb->get_regular_price()
#1 /home/username/public_html/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-product.php(1700): WC_Product_Woosb->get_price()
#2 /home/username/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php(723): WC_Product->is_purchasable()
#3 /home/username/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php(764): wc_get_product_class()
#4 /home/username/public_html/wp-content/plugins/woocommerce/templates/content-product.php(27): wc_product_class()
#5 /home/username/public_html/wp-includes/template.php(816): require('/home/username/p...')
#6 /home/username/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php(285): load_template()
#7 /home/username/public_html/wp-content/plugins/woocommerce/includes/shortcodes/class-wc-shortcode-products.php(667): wc_get_template_part()
#8 /home/username/public_html/wp-content/plugins/woocommerce/includes/shortcodes/class-wc-shortcode-products.php(102): WC_Shortcode_Products->product_loop()
#9 /home/username/public_html/wp-content/plugins/woocommerce/includes/class-wc-shortcodes.php(286): WC_Shortcode_Products->get_content()
#10 /home/username/public_html/wp-includes/shortcodes.php(434): WC_Shortcodes::products()
#11 [internal function]: do_shortcode_tag()
#12 /home/username/public_html/wp-includes/shortcodes.php(273): preg_replace_callback()
#13 /home/username/public_html/wp-content/themes/Divi-Child/functions.php(338): do_shortcode()
#14 /home/username/public_html/wp-includes/shortcodes.php(434): mix_shortcode_better_related_products()
#15 [internal function]: do_shortcode_tag()
#16 /home/username/public_html/wp-includes/shortcodes.php(273): preg_replace_callback()
#17 /home/username/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3122): do_shortcode()
#18 /home/username/public_html/wp-includes/shortcodes.php(434): ET_Builder_Element->_render()
#19 [internal function]: do_shortcode_tag()
#20 /home/username/public_html/wp-includes/shortcodes.php(273): preg_replace_callback()
#21 /home/username/public_html/wp-content/themes/Divi/includes/builder/main-structure-elements.php(3784): do_shortcode()
#22 /home/username/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Column->render()
#23 /home/username/public_html/wp-includes/shortcodes.php(434): ET_Builder_Element->_render()
#24 [internal function]: do_shortcode_tag()
#25 /home/username/public_html/wp-includes/shortcodes.php(273): preg_replace_callback()
#26 /home/username/public_html/wp-content/themes/Divi/includes/builder/main-structure-elements.php(2274): do_shortcode()
#27 /home/username/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Row->render()
#28 /home/username/public_html/wp-includes/shortcodes.php(434): ET_Builder_Element->_render()
#29 [internal function]: do_shortcode_tag()
#30 /home/username/public_html/wp-includes/shortcodes.php(273): preg_replace_callback()
#31 /home/username/public_html/wp-content/themes/Divi/includes/builder/main-structure-elements.php(1606): do_shortcode()
#32 /home/username/public_html/wp-content/themes/Divi/includes/builder/class-et-builder-element.php(3441): ET_Builder_Section->render()
#33 /home/username/public_html/wp-includes/shortcodes.php(434): ET_Builder_Element->_render()
#34 [internal function]: do_shortcode_tag()
#35 /home/username/public_html/wp-includes/shortcodes.php(273): preg_replace_callback()
#36 /home/username/public_html/wp-includes/class-wp-hook.php(341): do_shortcode()
#37 /home/username/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#38 /home/username/public_html/wp-content/themes/Divi/includes/builder/core.php(46): apply_filters()
#39 /home/username/public_html/wp-content/themes/Divi/includes/builder/frontend-builder/theme-builder/frontend.php(347): et_builder_render_layout()
#40 /home/username/public_html/wp-content/themes/Divi/includes/builder/frontend-builder/theme-builder/frontend.php(506): et_theme_builder_frontend_render_layout()
#41 /home/username/public_html/wp-content/themes/Divi/includes/builder/frontend-builder/theme-builder/frontend-body-template.php(7): et_theme_builder_frontend_render_body()
#42 /home/username/public_html/wp-includes/template-loader.php(125): include('/home/username/p...')
#43 /home/username/public_html/wp-blog-header.php(19): require_once('/home/username/p...')
#44 /home/username/public_html/index.php(17): require('/home/username/p...')
#45 {main}
  thrown in /home/username/public_html/wp-content/plugins/woo-product-bundle/includes/class-product.php on line 134

My temporary solution has been to change line 134 in class-product.php from

$regular_price += $_product->get_regular_price() * (float) $item['qty'];

to

$regular_price += (float) $_product->get_regular_price() * (float) $item['qty'];

In other words, add (float) in front of $_product.

I’m not sure exactly what has changed, but the root of the problem seems to be your plugin not casting to float, perhaps relying on implicit typecasting?

• This topic was modified 6 months, 1 week ago by clb92. Reason: Wording