fatal-errors regarding Uncaught TypeError

  • Resolved grapelover

    (@grapelover)


    6 months, 3 weeks ago

    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” ] }2025-07-30T01:49:29+00:00Critical 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” ] }2025-07-30T01:51:02+00:00Critical 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 context2025-07-30T01:53:00+00:00Critical 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)

    (@shahzeenfarooq)

    6 months, 3 weeks ago

    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/


    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/ or 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

    (@thelmachido)

    6 months, 2 weeks ago

    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://ww.wp.xz.cn/support/plugin/woocommerce/reviews/#new

Viewing 2 replies - 1 through 2 (of 2 total)

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