I don't see any error when I load the page. I'm using the Microsoft EDGE browser.
While viewing the page, hit F12. Then look for the
Console tab, near the bottom of the developer's toolbar. It shows the error. Here's what I see in Edge, attached.
That message usually means that you need to make the album again, making sure you don't tell it to process only updated subdirectories, and then upload it again. Don't try to "pick and choose" files to upload. Use the jAlbum uploader, which is much faster than something like FileZilla, and doesn't make the mistake of not uploading necessary files.