Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dZYx5Ye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-05df0f3f-a735-4310-8fa7-8053c2a4df0d",
      "cw-0d2a3151-592d-47d9-97d8-163b0a687207"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a49dd309-8576-4823-b074-f3f1d36e0330",
    "manifestId": "https://dam.iuav.it/iuav/containers/dZYx5Ye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0d2a3151-592d-47d9-97d8-163b0a687207"
  }
}