Posts and page counts show up in admin but table says none found

On the front page of my site, it shows the message “Not Found Sorry, but you are looking for something that isn’t here.” as if there are no posts or pages in my database.

But when I go into my database and look, they are obviously all there and even in the admin panel, when I look at the list of posts or pages on my site, the COUNT number is proper (4 pages and 74 posts) but the table below that is supposed to show them is BLANK saying “No pages found” or “No posts found” – an obvious contradiction.

Weird!

Any ideas? What is going on here? How can it recognize the count but not display the actual content?