Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nv7ka0v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f247c353-3fc6-47c7-8e4c-b9f7b06b230a",
      "cw-023ce67a-931c-436e-9944-1fe4b9b77513"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c0db496f-7315-4ed4-9450-a8a6d02c4b77",
    "manifestId": "https://dam.iuav.it/iuav/containers/nv7ka0v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-023ce67a-931c-436e-9944-1fe4b9b77513"
  }
}