Mac Os Catalina

I am having issues with accessing iMac's shared folders from a macbook pro. I recently upgraded to MacOS Catalina. I could see and share screen on Macbook pro -> iMac, but I am unable to find a solution to recover access to folders.

I tried several solutions but without success so far (New users, activate and deactivate file sharing, connection through servers connection instead of accessing through finder, etc)

I receive an error saying that I don't have permissions or there isn't any shared folders to access.

I would like to get some help here.

Kind regards