Post installation

Hello, 
Just lately, trying to display an image panorama through Drupal/Panolens only shows a "blank" image on Vivaldi-Desktop: 7.10.4001.3 (Official Build) (64-Bit).Both browsers on Debian 12.
The error I see when looking at the console is: THREE.WebGLRenderer: Error creating WebGL context.

I have a basic page that shows a series of images and each one links to a different page on my site.

When I add a group or want to edit a group member I get the following error:

Warning: Undefined array key "group" in Drupal\group\Entity\Access\GroupRelationshipAccessControlHandler->checkCreateAccess() (line 61 of modules/contrib/group/src/Entity/Access/GroupRelationshipAccessControlHandler.php).

In some pages i need to upload many attachment at different time.

Doing this using page editor is very slow.

I'd like to create a folder "attachment" and subfolder for any page i need (/attachment/contract, attachment/order and so on)

Installed Imce file manager to create folders and upload files.

The idea was a view where the contextual filter is able to read a field from the page (or the page URL) and list the corrispondig files.

After many hours of tryng i hope someone can give me some hint, or some documentation.

Thank's 

Marco. 

Every time I install a module, no matter which one it is, my site falls into a 403 forbidden and I have to go into my hosting providers account portal and fix the permissions. on top of that it locks my system up until i flush caches, if I ry to install a different module it happens again.

I'm using CMS 2.0 from a fresh install via installation script through softlicious on my hosting providers system. I am running the cms with the Mercury theme, which I am modifying for my sites usage. This is a production site that is live currently.