Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v68GBbe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-02384374-0687-4b3f-9dbe-4d73c5927eb2",
      "cw-5aa9390e-2b2f-4a21-a921-5f8c61402715"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bc16d3d0-7f90-4eab-a5b1-97c9766cdd31",
    "manifestId": "https://dam.iuav.it/iuav/containers/v68GBbe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5aa9390e-2b2f-4a21-a921-5f8c61402715"
  }
}