Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDkPkBZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c93ecb9e-c937-4153-a395-d3852313c371",
      "cw-b312d466-3c4e-4283-85d0-0a054f499ee6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-db17b2fd-1dfe-4b30-833e-fe8b2023476a",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDkPkBZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b312d466-3c4e-4283-85d0-0a054f499ee6"
  }
}