Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e16872Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bb7c74f4-c141-4c81-93d4-f13eaf9210d0",
      "cw-3e44e787-94d0-4c8f-a9ba-9a937e6fec33"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3d9d2a48-e931-4a32-83c0-802ff3ac3e2c",
    "manifestId": "https://dam.iuav.it/iuav/containers/e16872Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3e44e787-94d0-4c8f-a9ba-9a937e6fec33"
  }
}