Two errors involving the "Admin Users" and (admin) "Account" in the back-end

PHP 8.5 / ZC 2.1.0

While editing the logged in user's account the following warning occurs, albeit inconsistently:

[27-Feb-2026 20:20:11 America/New_York] Request URI: /justoffice/index.php?cmd=users, IP address: 74.89.48.247, Language id 1
#0 /home/justuptown/public_html/justoffice/users.php(111): zen_debug_error_handler()
#1 /home/justuptown/public_html/justoffice/index.php(16): require('...')
--> PHP Warning: Undefined array key "profile" in /home/justuptown/public_html/justoffice/users.php on line 111.

I did "patch" this by editing users.php (line 111) to

$errors = zen_update_user($_POST['name'], $_POST['email'], $_POST['id'], $_POST['profile'] ?? null);

Upon editing the details (Admin > Account) and clicking confirm, a 500 Server Error occurs as below:

[27-Feb-2026 20:56:11 America/New_York] PHP Fatal error:  Uncaught Error: Undefined constant "SUCCESS_USER_DETAILS_UPDATED" in E:\wamp64\www\justuptown\justoffice\admin_account.php:50
Stack trace:
#0 E:\wamp64\www\justuptown\justoffice\index.php(16): require()
#1 {main}
  thrown in E:\wamp64\www\justuptown\justoffice\admin_account.php on line 50

For this one I had to manually add:

'SUCCESS_USER_DETAILS_UPDATED' => 'User details updated.',

into the array of admin/lang.admin_account.php

The first issue (undefined "profile") has been corrected in the zc210-alpha on GitHub; see https://github.com/zencart/zencart/pull/6935

The second issue, I don't understand since the SUCCESS_USER_DETAILS_UPDATED constant is present on line 28 of zc210's as-shipped /admin/includes/languages/english/lang.users.php.

retched:

...

[27-Feb-2026 20:56:11 America/New_York] PHP Fatal error: Uncaught Error: Undefined constant "SUCCESS_USER_DETAILS_UPDATED" in E:\wamp64\www\justuptown\justofficeadmin_account.php:50
Stack trace:
#0 E:\wamp64\www\justuptown\justoffice\index.php(16): require()
#1 {main}
thrown in E:\wamp64\www\justuptown\justofficeadmin_account.php on line 50

> ...

> **lat9:**
>
> ...
> The second issue, I don't understand since the SUCCESS_USER_DETAILS_UPDATED constant is present on line 28 of zc210's as-shipped /admin/includes/languages/english/lang.users.php.

the error is coming from a different script.  hence the needed correction.

not sure if the constant should be moved to the lang.english file.

best.

carlwhat:

the error is coming from a different script. hence the needed correction.

not sure if the constant should be moved to the lang.english file.

best.
My bad for not scrolling that second message; let me look further.

@carlwhat, I agree with your assessment that the language constant needs to be moved to the lang.english.php file; PR forthcoming.

Note: PR created: https://github.com/zencart/zencart/pull/7495