Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2vRokkA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6aedb359-55b3-47f8-a5fc-a9668dc2e9ce",
      "cw-015a37c4-30e5-4284-b0d6-e8e6d59974f5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-908227b7-1f55-4615-b2c1-c8ef5085a0c2",
    "manifestId": "https://dam.iuav.it/iuav/containers/2vRokkA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-015a37c4-30e5-4284-b0d6-e8e6d59974f5"
  }
}