Drupal 8.x

I had a week-old Drupal 9.3.7 site. I added some content, I installed some contributed modules. No problems worth mentioning. Then, I installed the Devel module. No apparent problem, at first sight.

Everything was running fine until I tried to install ng_lightbox (this resulted in an Error 500) and now I get:

Fatal error: Cannot redeclare at_tools_preprocess_system_themes_page() (previously declared in /var/www/html/drupal/modules/at_tool/at_tool.module:21) in /var/www/html/drupal/modules/at_tools/at_tools.module on line 21

but only when logged in.

The site itself still works.

We're trying to add a 'class' field to the media library CKEditor edit form using the code from the Media Library module docs:

I am currently running Drupal 8.9.18 and am upgrading local development site to D9. I have upgraded all modules and the upgrade_status module tells me all is well. I now need to upgrade the platform for PHP and MariaDB. I have successfully installed a new lamp stack from BITNAMI version 8.1.4-0, and created and restored database from backup

DB is Server version: 10.4.24-MariaDB - MariaDB Server

PHP is Version 8.1.4

Apache 2.4.53

The position will participate on a multi-person team on the redesign of the Client’s website which includes moving to the Acquia DXP and migration to Drupal.

Job Requirements:

I'm looking for a module or a way to log all activities of users. Somethng like "Events Log Track", not only CUD but also what they are reading od viewing. Does anybody have tipp?