Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0KzdZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5a09b4e0-3613-4091-b5cc-2897472f6905",
      "cw-bffa4062-11a4-4e78-9afa-51514fc51356"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-02b30b90-cdd1-4f50-ae43-d41500c22ab2",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0KzdZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bffa4062-11a4-4e78-9afa-51514fc51356"
  }
}