Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78NYQA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bd8e01d3-294d-4f38-a1cd-a7bf7c61bc30",
      "cw-9b17401c-df6f-4f51-9069-66fb3e14c44c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6e6439b2-0c9b-497f-8ba8-0a3e5227b304",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78NYQA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9b17401c-df6f-4f51-9069-66fb3e14c44c"
  }
}