Odd warning log popped up

[wsworx]

ZC 2.1
PHP 8.3
customer_tax_exempt_2.0.2
edit_orders-5.0.2
paypalr-1.2.1
sales_report-4.0.2
sitemapxml-4.0.4
usps-USPS_2024_08_25_K11l
zen_Image-Handler-5.3.5
zen_TyPackageTracker-5.0.1

Received this warning log a couple off days ago.
Any assistance is greatly appreciated.

[06-Oct-2025 13:11:24 America/Boise] Request URI: /index.php?main_page=checkout_payment_address, IP address: **.***.***.**, Language id 1
#0 /public_html/includes/modules/checkout_new_address.php(32): zen_debug_error_handler()
#1 /public_html/includes/modules/pages/checkout_payment_address/header_php.php(34): require('...')
#2 /public_html/index.php(35): require('...')
--> PHP Warning: Undefined array key "gender" in /public_html/includes/modules/checkout_new_address.php on line 32.

[dbltoe]

Look at the file and find:

if (isset($_POST['action']) && ($_POST['action'] === 'submit')) {
    // process a new address





    if (!empty($_POST['firstname']) && !empty($_POST['lastname']) && !empty($_POST['street_address'])) {





        $process = true;







if (ACCOUNT_GENDER === 'true') {

About 7 months ago, a line was added by swguy:

$gender = zen_db_prepare_input($_POST['gender'] ?? '');

You can see all the changes to the file at https://github.com/zencart/zencart/b...ew_address.php

[carlwhat]

[06-Oct-2025 13:11:24 America/Boise] Request URI: /index.php?main_page=checkout_payment_address, IP address: **.***.***.**, Language id 1
#0 /public_html/includes/modules/checkout_new_address.php(32): zen_debug_error_handler()
#1 /public_html/includes/modules/pages/checkout_payment_address/header_php.php(34): require('...')
#2 /public_html/index.php(35): require('...')
--> PHP Warning: Undefined array key "gender" in /public_html/includes/modules/checkout_new_address.php on line 32.

the code is transitioning....

[wsworx]

Look at the file and find:

if (isset($_POST['action']) && ($_POST['action'] === 'submit')) {
    // process a new address





    if (!empty($_POST['firstname']) && !empty($_POST['lastname']) && !empty($_POST['street_address'])) {





        $process = true;







if (ACCOUNT_GENDER === 'true') {

About 7 months ago, a line was added by swguy:

$gender = zen_db_prepare_input($_POST['gender'] ?? '');

You can see all the changes to the file at https://github.com/zencart/zencart/b...ew_address.php

Thank You for the feedback.
I reviewed my files and that line is in there.

[wsworx]

What do you mean by "transitioning"?