Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2AOrKbv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f6802599-f2b1-471a-b475-1b2e018cf480",
      "cw-a35ff819-4ed8-413a-b345-46e415ed0c9e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-50b90e12-a7de-4ff5-b41d-6a35b0da5ade",
    "manifestId": "https://dam.iuav.it/iuav/containers/2AOrKbv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a35ff819-4ed8-413a-b345-46e415ed0c9e"
  }
}