Ticket #57813: img.patch

/app/wp-admin/includes/image.php

@@ -89 +89 @@
 
         $registered_sizes = wp_get_registered_image_subsizes();
         $image_meta       = wp_get_attachment_metadata( $attachment_id );
 
         // Meta error?
-        if ( empty( $image_meta ) ) {
+        if ( empty( $image_meta ) || !array_key_exists('width', $image_meta) || !array_key_exists('height', $image_meta) ) {
                 return $registered_sizes;
         }
 
         // Use the originally uploaded image dimensions as full_width and full_height.
         if ( ! empty( $image_meta['original_image'] ) ) {