Board Thread:Support Requests - Getting Started/@comment-26233737-20200422151228/@comment-9605025-20200424183422

I see. It looks like the thread page was deleted. This is a 3rd scenario which is a bit harder to deal with. However, you have already done the hard part by finding the page. You should be able to just use the "Delete" option in the edit drop-down to delete the page.