All thumbnails work expect one

Hi, we installed the nrelate plugin for popular posts on bizzvenue.com, it worked great, until a post titled “THE POWER OF THE EARLY START” started rises in popularity. For some reason, the plugin is displaying all the images expect for this one. I tried deleting the image from the article and uploading again and re indexing the site didn’t help either.

If you visit the home page http://www.bizzvenue.com, you will see what I mean.

What could I do to solve this issue?

Thanks.

https://wordpress.org/plugins/nrelate-most-popular/