Administrator Configuration page not displaying properly

To start answering this support request we need to see:

• The contents of the Configuration sub-menu item shown at /admin/structure/menu/manage/admin. This is the menu you see when browsing to /admin/config
• The composer.json file.
• Information about any custom code.

Hi @cilefen, thanks for replying.

The menu is quite large so it took a few screenshots to get the whole thing. They and the composer.json are attached. There is no custom code on the site.

Thanks for the entire menu, but I only needed the "Configuration" sub-menu item.

At a glance, the problem is likely the menu. Unfortunately, your screen shots break at a key junction. At just a glance it looks like some key menu items were moved by someone or something to be below the "Workflow" item, and mostly empty menus were left immediately below the "Configuration" item.

For your reference I am attaching what a newly-installed Drupal 11 menu from /admin/structure/menu/manage/admin looks like. I think you will note some differences under the "Configuration" sub-menu item. I suggest you relocate menu items like "Content authoring" to be properly-situated below "Configuration", which should fix your problem.