Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nv7kg0v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a7e01546-fb40-4b4c-b7b2-50669ee7d92b",
      "cw-e468979f-2a08-44aa-b048-1cf96038ed33"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0c7a713e-0634-4555-a1f8-1adee8ec19d3",
    "manifestId": "https://dam.iuav.it/iuav/containers/nv7kg0v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e468979f-2a08-44aa-b048-1cf96038ed33"
  }
}