ISO File not uploading

I am unable to use a blank virtio KVM template and add an ISO file as a cd.

Is there a trick to make it work? It fails without even trying to upload.

The file is debian installer for 3CX phone system.

https://downloads-global.3cx.com/downloads/debian9iso/debian-amd64-netinst-3cx.iso

Hi bradkuhl:

There's an issue with antsle.us addresses and uploading files. The bug has been reported to our developers.

There are couple workarounds:

1) You can use the Image Source - Path - where you specify path to file on your antsle.

2) You can still use Image Source - File Upload but you the IP Address instead of antsle.us address for antMan.
http://ip_address:3000 where ip_address is the IP Address of your antsle.

Thanks.