I can't seem to delete a particular custom object. I am getting an error that it is in use by a Navigation Topic Item. I have looked through my three community nagivation bars & can't see a reference to it. I see it as a tab in Classic but don't see a way to get rid of it. I am not sure where I should be looking for this or how to figure out where it is. When I click on the error message, I receive an Insufficient Privileges error even though I am logged in with system admin rights. I am including the images I am seeing. enter image description here
I solved this problem by deleting the navigation menu option in the portal that previously pointed to the custom object that I was trying to delete. The menu option did not currently point to the object - it instead pointed to a community page. However, the navigation must have still had some kind of tie to the object because once I deleted the navigation option, I was able to delete the custom object.