No folders found in folder list &2.
&2 - The ID of the folder list ID that does not contain any folders
A function has tried to use the specified folder list to find the templates for the generation of the HTML pages. However, the folder list does not contain any folders - and no templates can therefore be found.
Find the folder list using the menu item "Folder List" in the administration
interface.
Add the necessary folders to the folder list.