I did a simple experiment to upload two images of maps, with the map template using this tool.

I am able to get the images using a browser and "wget"

My xml file is:

<?xml version="1.0" encoding="UTF-8"?>

<data>

<record>

<filename>

map1.jpg

</filename>

<title>

Afbeeldinge der Stad Jerusalem

</title>

<url>

http://iiif.nli.org.il/IIIFv21/FL7070748/full/300,/0/default.jpg

</url>

</record>

<record>

<filename>

map2.jpg

</filename>

<title>

Ierusalem

</title>

<url>

http://iiif.nli.org.il/IIIFv21/FL7071077/full/300,/0/default.jpg

</url>

</record>

</data>

my mapping is: https://commons.wikimedia.beta.wmflabs.org/wiki/GWToolset:Metadata_Mappings/Shavaty/NLI-Maps.json

I get the error:

The media file URL could not be evaluated. The URL delivers the content in a way that is not yet handled by this extension or there was an HTTP request issue. URL given was "http://iiif.nli.org.il/IIIFv21/FL7070748/full/300,/0/default.jpg". HTTP request error "There was a problem during the HTTP request: 405 Method Not Allowed".