Can't change folder sharing permission (Error reading default ACL. status 403)

[promocare]

When I try to change the sharing permission for a folder on solid.community I see the following message:

Error reading default ACL. status 403: (Sharing not available to you)Can't read Access Control File <https://*****.solid.community/public/folder/subfolder/.acl>: Failed to load <https://*****.solid.community/public/folder/subfolder/.acl> Fetcher: <https://*****.solid.community/public/folder/subfolder/.acl> User Unauthorized status: 403

I previously had complete access to this folder and now it seems like I am no longer authorized to make changes.

[megoth]

The error seems to be that somehow your WebID has been removed from CONTROL access in https://*****.solid.community/public/folder/subfolder/.acl. This can happen for various reasons, as the sharing view don't have to many safeguards (e.g. to stop you from readding your own WebID through the adding user agent menu - it will add your WebID to the bottom group, i.e. Viewers, hence you lose CONTROL access).

Are you still experiencing this problem? Do you recall the events that happened before you lost access, to help us narrow down the list of possible errors?