Title: fatal-errors regarding Uncaught TypeError Last modified: November 21, 2025 --- # fatal-errors regarding Uncaught TypeError * Resolved [grapelover](https://wordpress.org/support/users/grapelover/) * (@grapelover) * [6 months, 3 weeks ago](https://wordpress.org/support/topic/fatal-errors-regarding-uncaught-typeerror-2/) * hi, there * i keep receving error message from log as below, please advise the cause and solution thanks * Uncaught TypeError: Unsupported operand types: float * string in /home4/igrabcom/ public_html/wp-content/plugins/woocommerce/includes/class-wc-order-item-fee.php: 111 Additional context{ “error”: { “type”: 1, “file”: “/home4/igrabcom/public_html/ wp-content/plugins/woocommerce/includes/class-wc-order-item-fee.php”, “line”: 111 }, “remote-logging”: true, “backtrace”: [ “”, “#0 /home4/igrabcom/public_html/ wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-order.php(1829): WC_Order_Item_Fee->calculate_taxes()”, “#1 /home4/igrabcom/public_html/wp-content/ plugins/woocommerce/src/Internal/Orders/TaxesController.php(50): WC_Abstract_Order- >calculate_taxes()”, “#2 /home4/igrabcom/public_html/wp-content/plugins/woocommerce/ src/Internal/Orders/TaxesController.php(20): Automattic\WooCommerce\Internal\ Orders\TaxesController->calc_line_taxes()”, “#3 /home4/igrabcom/public_html/wp- content/plugins/woocommerce/includes/class-wc-ajax.php(1487): Automattic\WooCommerce\ Internal\Orders\TaxesController->calc_line_taxes_via_ajax()”, “#4 /home4/igrabcom/ public_html/wp-includes/class-wp-hook.php(324): WC_AJAX::calc_line_taxes()”, “# 5 /home4/igrabcom/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()”,“# 6 /home4/igrabcom/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()”,“# 7 /home4/igrabcom/public_html/wp-admin/admin-ajax.php(192): do_action()”, “#8{ main}”, “thrown” ] }[](https://www.igrab.com.au/wp-admin/admin.php?page=wc-status&tab=logs&view=single_file&file_id=fatal-errors-2025-07-30#L2)** 2025-07-30T01:49:29+00:00****Critical** Uncaught TypeError: Unsupported operand types: float * string in /home4/igrabcom/public_html/wp-content/plugins/woocommerce/ includes/class-wc-order-item-fee.php:111 Additional context{ “error”: { “type”: 1, “file”: “/home4/igrabcom/public_html/wp-content/plugins/woocommerce/includes/ class-wc-order-item-fee.php”, “line”: 111 }, “remote-logging”: true, “backtrace”:[“”,“# 0 /home4/igrabcom/public_html/wp-content/plugins/woocommerce/includes/abstracts/ abstract-wc-order.php(1829): WC_Order_Item_Fee->calculate_taxes()”, “#1 /home4/ igrabcom/public_html/wp-content/plugins/woocommerce/src/Internal/Orders/CouponsController. php(84): WC_Abstract_Order->calculate_taxes()”, “#2 /home4/igrabcom/public_html/ wp-content/plugins/woocommerce/src/Internal/Orders/CouponsController.php(29): Automattic\WooCommerce\Internal\Orders\CouponsController->add_coupon_discount()”,“# 3 /home4/igrabcom/public_html/wp-content/plugins/woocommerce/includes/class-wc- ajax.php(1269): Automattic\WooCommerce\Internal\Orders\CouponsController->add_coupon_discount_via_ajax()”,“# 4 /home4/igrabcom/public_html/wp-includes/class-wp-hook.php(324): WC_AJAX::add_coupon_discount()”,“# 5 /home4/igrabcom/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()”,“# 6 /home4/igrabcom/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()”,“# 7 /home4/igrabcom/public_html/wp-admin/admin-ajax.php(192): do_action()”, “#8{ main}”, “thrown” ] }[](https://www.igrab.com.au/wp-admin/admin.php?page=wc-status&tab=logs&view=single_file&file_id=fatal-errors-2025-07-30#L3)** 2025-07-30T01:51:02+00:00****Critical** Uncaught TypeError: Unsupported operand types: float * string in /home4/igrabcom/public_html/wp-content/plugins/woocommerce/ includes/class-wc-order-item-fee.php:111 Additional context[](https://www.igrab.com.au/wp-admin/admin.php?page=wc-status&tab=logs&view=single_file&file_id=fatal-errors-2025-07-30#L4)** 2025-07-30T01:53:00+00:00****Critical** Uncaught TypeError: Unsupported operand types: float * string in /home4/igrabcom/public_html/wp-content/plugins/woocommerce/ includes/class-wc-order-item-fee.php:111 Additional context * Would this method help to find out the issue? * **How to Confirm the Source** 1) Temporarily enable WP debugging * Add to wp-config.php: * `define('WP_DEBUG', true); define('WP_DEBUG_LOG', true);` * Then trigger the error → check: * `/wp-content/debug.log` * Look for any plugin hooking: `woocommerce_cart_calculate_fees``woocommerce_order_item_fee`` woocommerce_before_calculate_totals` Viewing 2 replies - 1 through 2 (of 2 total) * Plugin Support [shahzeen(woo-hc)](https://wordpress.org/support/users/shahzeenfarooq/) * (@shahzeenfarooq) * [6 months, 3 weeks ago](https://wordpress.org/support/topic/fatal-errors-regarding-uncaught-typeerror-2/#post-18727554) * Hi there! * Thank you for sharing the error details. * This message indicates that something is passing a **string instead of a number** into the WooCommerce fee calculation, which causes the error: * `Unsupported operand types: float * string` * WooCommerce core itself expects a numeric value, so this is commonly caused by** custom code** or a **plugin** adding a fee or modifying taxes. * To assist you further, could you please provide more information on when the issue started appearing? For example, did you recently update a plugin, install a new one, or add any custom code? * In the meantime, please try running a conflict test by deactivating all plugins except WooCommerce and activating a default theme like Twenty Twenty-Five. Then check if the error still occurs. * For detailed steps on how to run a conflict test, you can follow this guide: [https://woo.com/document/how-to-test-for-conflicts/](https://woo.com/document/how-to-test-for-conflicts/) * Also, I’d like to understand your site properly. Please share with us the necessary information below for us to investigate the issue further: - **System Status Report** which you can find via WooCommerce > Status - **Fatal error logs** (if any) under WooCommerce > Status > Logs. * Please use [https://pastebin.com/](https://pastebin.com/) or [https://gist.github.com/](https://gist.github.com/) and share a link to that paste in reply here. Once we have more information, we’ll be able to assist you further. * Plugin Support [thelmachido a11n](https://wordpress.org/support/users/thelmachido/) * (@thelmachido) * [6 months, 2 weeks ago](https://wordpress.org/support/topic/fatal-errors-regarding-uncaught-typeerror-2/#post-18737298) * It’s been a while since we heard back from you for this reason we are closing this thread.  * If WooCommerce has been useful for your store and you appreciate the support you’ve received, we’d truly appreciate it if you could leave us a quick review here:  * [https://wordpress.org/support/plugin/woocommerce/reviews/#new](https://wordpress.org/support/plugin/woocommerce/reviews/#new-post ) Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘fatal-errors regarding Uncaught TypeError’ is closed to new replies. * ![](https://ps.w.org/woocommerce/assets/icon.svg?rev=3234504) * [WooCommerce](https://wordpress.org/plugins/woocommerce/) * [Frequently Asked Questions](https://wordpress.org/plugins/woocommerce/#faq) * [Support Threads](https://wordpress.org/support/plugin/woocommerce/) * [Active Topics](https://wordpress.org/support/plugin/woocommerce/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/woocommerce/unresolved/) * [Reviews](https://wordpress.org/support/plugin/woocommerce/reviews/) * 2 replies * 3 participants * Last reply from: [thelmachido a11n](https://wordpress.org/support/users/thelmachido/) * Last activity: [6 months, 2 weeks ago](https://wordpress.org/support/topic/fatal-errors-regarding-uncaught-typeerror-2/#post-18737298) * Status: resolved