Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AKK1NVA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5d59a362-697f-4eb6-9a0a-8227ee068bf2",
      "cw-2d4a65ab-a2f5-497b-8338-21eeb80cffb4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0613ebd9-8a16-4410-bc93-626ae671fc1e",
    "manifestId": "https://dam.iuav.it/iuav/containers/AKK1NVA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2d4a65ab-a2f5-497b-8338-21eeb80cffb4"
  }
}