Warning: Error while adding a payment method in WooCommerce – how to fix it?

Warning: Trying to access array offset on null in /wp-content/plugins/woocommerce/includes/class-wc-form-handler.php on line 567 Warning: Trying to access array offset on null in /wp-content/plugins/woocommerce/includes/class-wc-form-handler.php on line 571

This type of message indicates that WooCommerce is trying to access data that is empty or does not exist. The most common cause of this problem is the lack of an active payment gateway that allows for saving payment methods.

Possible causes:

1. Lack of an active payment system that allows for storing payment methods (e.g., Stripe, Braintree)
2. Conflict with another plugin or outdated extension
3. Damaged or deleted stored payment method in user account
4. Incompatible WooCommerce version

How to solve the problem?

1. Install a suitable payment gateway
Use plugins that support storing payments, such as:

* WooCommerce Stripe Gateway
* PayPal Payments (with Vault function)
* Braintree for WooCommerce

Remember to configure them correctly using proper API data.
2. Update all extensions
Make sure both WooCommerce and related plugins are up-to-date. This ensures their mutual compatibility and reduces errors.
3. Hide the “Payment methods” tab (if unnecessary)
If you don’t use gateways that allow storing cards or accounts, simply remove the tab from the user interface. Insert the following code into your theme’s functions.php file:

“`php
add_filter(‘woocommerce_account_menu_items’, ‘remove_payment_methods_tab’);
function remove_payment_methods_tab($items) {
unset($items[‘payment-methods’]);
return $items;
}
“`
4. Enable debugging tools
In the wp-config.php file, set WP_DEBUG to true to get more information about errors.
Additionally, in WooCommerce → Status → Log, you’ll find detailed entries about potential issues.

Summary
If users encounter PHP warnings when adding payment methods on the “My account” page, it may be due to a missing or incorrectly configured gateway or conflict with an extension.

See also  Content management system (CMS)