Saving RicheyWeb-AdminExile plugin returns an error

[les3trapelles]

Steps to reproduce the issue

Save configuration of RicheyWeb-Adminexile plugin.

Expected result

When you enter to review configuration, it should work correctly

Actual result

It gives the following:
An error has occurred.
htmlspecialchars(): Argument #1 ($string) must be of type string, array given

System information (as much as possible)

PHP: 8.1.11
Database: mysql
Database version: 8.0.31
Web Server: Apache 2.4.6
Joomla Version: 4.2.5
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Additional comments

The problem occurs on input field about the groups where the plugin should apply. It expects a integer, not an array.

[brianteeman]

This should be reported to the maker of that extension,

[joomdonation]

As Brian mentioned, you should report this issue to the developer of that plugin so that he can fix it. Closing because this is not a core issue.

[les3trapelles]

This plugin has been installed by Joomla, not by me. It has come with version 4.2.5 of Joomla.
In my opinion, if Joomla adds this plugin in the install zip file, Joomla should work fine or check why it is not working as expected.

[joomdonation]

This plugin is not installed by Joomla. It must be installed by an administrator of your site, or you installed a quick start package has that plugin. Try to install a fresh installation of Joomla 4.2.5 if you want, you will see that plugin is not installed/available.