We are doing Sitecore upgrade from 9.2 to 10.2. When we reusing the same new publishing targets in upgrade, we couldn't able to see the Layout/Templates/System folders.
We can see that, if we can place the DB name in Web DB connection string.
Try this.
Hidden Items
is checked.This will show you the missing folders i.e. Layout/Templates/System
Have created the Custom WEB DB entries in /App_Data/items
and /Sitecore Modules/items
folder like master/web/core
. It resolved my issue.
View
Ribbon Menu that the check boxHidden items
is checked?