Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/avXmw0A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a5c32786-f172-4fc1-84b4-45a3473ae180",
      "cw-dd5ea749-1ef8-4b56-8d43-25f7ba1c2238"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0748af61-e83d-4df8-9a40-04a16d9e80af",
    "manifestId": "https://dam.iuav.it/iuav/containers/avXmw0A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-dd5ea749-1ef8-4b56-8d43-25f7ba1c2238"
  }
}