Uncaught TypeError: WooCommerce\PayPalCommerce\WcGateway\WCGatewayModule::WooCommerce\PayPalCommerce\WcGateway\{closure}(): Return value must be of type string, null returned in /modules/ppcp-wc-gateway/services.php:1639

[Francescou2]

Describe the Bug

Hi there, I got this error after updating to 2.9.6.
everything else seems to work correctly. what can i do?

Uncaught TypeError: WooCommerce\PayPalCommerce\WcGateway\WCGatewayModule::WooCommerce\PayPalCommerce\WcGateway{closure}(): Return value must be of type string, null returned in wp-content/plugins/woocommerce-paypal-payments/modules/ppcp-wc-gateway/services.php:1639
Stack trace:
#0 wp-content/plugins/woocommerce-paypal-payments/lib/packages/Inpsyde/Modularity/Container/ReadOnlyContainer.php(71): WooCommerce\PayPalCommerce\WcGateway\WCGatewayModule::WooCommerce\PayPalCommerce\WcGateway{closure}()
#1 wp-content/plugins/woocommerce-paypal-payments/modules/ppcp-wc-gateway/services.php(338): WooCommerce\PayPalCommerce\Vendor\Inpsyde\Modularity\Container\ReadOnlyContainer->get()
#2 [internal function]: WooCommerce\PayPalCommerce\WcGateway\WCGatewayModule::WooCommerce\PayPalCommerce\WcGateway{closure}()
#3 wp-content/plugins/woocommerce-paypal-payments/lib/common/Pattern/SingletonDecorator.php(62): call_user_func_array()
#4 wp-content/plugins/woocommerce-paypal-payments/lib/packages/Inpsyde/Modularity/Container/ReadOnlyContainer.php(71): WooCommerce\PayPalCommerce\Common\Pattern\SingletonDecorator->__invoke()
#5 wp-content/plugins/woocommerce-paypal-payments/modules/ppcp-save-payment-methods/src/SavePaymentMethodsModule.php(85): WooCommerce\PayPalCommerce\Vendor\Inpsyde\Modularity\Container\ReadOnlyContainer->get()
#6 wp-includes/class-wp-hook.php(324): WooCommerce\PayPalCommerce\SavePaymentMethods\SavePaymentMethodsModule->WooCommerce\PayPalCommerce\SavePaymentMethods{closure}()
#7 wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#8 wp-includes/plugin.php(517): WP_Hook->do_action()
#9 wp-settings.php(682): do_action()
#10 wp-config.php(98): require_once('...')
#11 wp-load.php(50): require_once('...')
#12 wp-admin/admin.php(34): require_once('...')
#13 wp-admin/theme-editor.php(10): require_once('...')
#14 {main}
thrown

To Reproduce

the error occurs if I edit the theme's function.php file. it fails to complete saving because of this error.

Environment

• WordPress Version 6.7.1
• WooCommerce Version 9.5.2
• Plugin Version 2.9.6
• Browser [e.g. Chrome, Safari] and Version Chrome 131.0.6778.205