Image Sever Error

Hi,

I’m using Image Server to serve IIIF images (packaged with IIIF Server and Universal Viewer and ImageMagick)

But I get this error:
Warning : Undefined variable $autoTile in ** /modules/ImageServer/Module.php** on line 599

on the admin/item/add php page

Has anyone seen this error and knows what it means? I’m not sure what the $autoTIle variable is at all.

Strangely, it is working as a IIIF file apparently whatever I upload.
https://manuscripts.naskahsumatra.org/s/archive/item/7191