“This image could not be loaded”

Hi there!

I’m having a strange issue. There’s no errors in the console etc. Thumbinals are also fine, but the images are not displaying in the lightboxes. There’s a link, something like

.../wp-content/plugins/photoblocks-grid-gallery/public/mthumb.php?w=1600&?h=1600&src=...

and it returns with status 200, but the page is blank when I open it in new tab. Any ideas?

PS I can send link via PM if needed.