Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e0Bo9Rv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-eb91b21d-af2c-4b86-9b22-e8882237a5ab",
      "cw-7978e116-9e5c-4c38-b534-d1c88295099b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b8dc2e2b-64a4-451c-90d6-c1e55306fb55",
    "manifestId": "https://dam.iuav.it/iuav/containers/e0Bo9Rv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7978e116-9e5c-4c38-b534-d1c88295099b"
  }
}