Good day
/admin/config/people/captcha
PHP Fatal error: Call to undefined function locale_language_list() in /home/username/domains/mihail.space/modules/captcha/captcha.admin.inc on line 159

If at the time disable module locale, then path is working

When migrating a site to Backdrop that was upgraded from Drupal 6 to 7 and had captcha previously, I get this error on the settings page:

Catchable fatal error: Argument 1 passed to backdrop_sort() must be of the type array, null given, called in /home/backdrop/modules/contrib/captcha/captcha.inc on line 134 and defined in /home/backdrop/core/includes/common.inc on line 6812

Hello Webdeveloper,

I use Backdrop 1.2 and when I run it in the browser URL (/admin/config/people/captcha/captcha/settings), I see this error message.

Warning: htmlspecialchars () Expects parameter 1 to be string, object Given in check_plain () (line 1848 of /www/htdocs/xxxxxxxxxxx/cms/backdrop/core/includes/bootstrap.inc).

How can you eliminate? Thank you in advance.

I installed locally and configured for the user_register_form. Installed on remote, then exported config from local to remote. All settings transferred except the form id.

I enabled captcha and I get an error message on the config page at /admin/config/people/captcha.

The error is The website encountered an unexpected error. Please try again later.

I am checking to see what the php error is in the server logs. Will report back.

The Captcha general settings at admin/config/people/captcha/captcha/settings includes option to override individual forms if desired. The form id must be entered correctly for this to work. For example to have no challenge on the user login one must enter user_login not user-login or user_login_form. It can be difficult to get the right id. It would be nice to have some help in the way of the available form ids or a selection box.

After upgrading a site from D7, there are many watchdog entries of the form

Notice: Undefined offset: 1 in captcha_get_form_id_setting() (line 100 of /mysite/modules/contrib/captcha/captcha.inc).

The root cause of these reports is because in the update hook captcha_update_1000(), the variable captcha_default_challenge is converted to a config variable of the same name. But in every other case, the variable prefix captcha_ is removed during the conversion to config, so by rights, variable captcha_default_challenge should have been converted to config variable default_challenge.

And indeed, there are many references to the latter in the module; in particular, the line in captcha_get_form_id_setting() that causes this error:

      list($module, $type) = explode('/', config_get('captcha.settings', 'default_challenge'));

The error is generated because there is no config setting of default_challenge. There is, instead, a config setting of captcha_default_challenge that never gets used.

The solution is straightforward, I think: add another update hook that converts the config variable captcha_default_challenge to default_challengeif it isn't already converted or set by the site admin.

PR to follow.

On an upgraded D7 site, I get this on the login screen:

Notice: Undefined offset: 1 in captcha_get_form_id_setting() (line 99 of /path/modules/captcha/captcha.inc).

When I go to the configuration page for Captcha, it looks like some of the settings from the D7 site were not transferred over (including default challenge type, form IDs, Captcha description). After I re-enter and save config, the notice no longer shows up.

On Backdrop 1.24.1, Installed CAPTCHA 1.x-1.7.2. Installs OK, but going to configure for first time, at admin/config/people/captcha gives fatal error on screen:

Argument 1 passed to backdrop_sort() must be of the type array, null given, called in /app/modules/contrib/captcha/captcha.inc on line 132

Reported in site log as:

TypeError: Argument 1 passed to backdrop_sort() must be of the type array, null given, called in /app/modules/contrib/captcha/captcha.inc on line 132 in backdrop_sort() (line 7278 of /app/core/includes/common.inc).

Same error on local site and staging:

• Local site is PHP 7.4.33
• Staging site is: PHP 8.1.17

Fatal error: Call to undefined function locale_language_list() in /home/www/backdrop/modules/captcha-1.x-1.x/captcha.admin.inc on line 159

In drupal 8 locale_language_list() was removed. See https://www.drupal.org/node/1414264

Changing to language_list() in line 159 and line 290 resolves the problem, but then I get many times the warning

Warning: htmlspecialchars() expects parameter 1 to be string, object given in check_plain() (line 1843 of /home/www/backdrop/core/includes/bootstrap.inc).

I just downloaded and enabled both captcha and recaptcha with drush. Then when I went to the settings page for captcha I got a fatal error:

TypeError: Argument 1 passed to backdrop_sort() must be of the type array, null given, called in backdrop/modules/contrib/captcha/captcha.inc on line 131 in backdrop_sort() (line 7276 of backdrop/core/includes/common.inc). 

This line is called immediately after retrieving captcha_points from the config file. Is it possible that this doesn't get set on install, or gets set to something like FALSE, or ''?

I'm also seeing

Warning: Invalid argument supplied for foreach() in captcha_admin_settings() (line 103 of backdrop/modules/contrib/captcha/captcha.admin.inc). 

That line also assumes $captcha_points was set, and is an array.