Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/A308dpe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-431e00a6-91b6-4b3b-bdf1-17caff2204aa",
      "cw-754331e1-b6ce-4258-862e-97bad32a1e33"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9a9c2913-5867-4c2f-8241-b8a9569da706",
    "manifestId": "https://dam.iuav.it/iuav/containers/A308dpe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-754331e1-b6ce-4258-862e-97bad32a1e33"
  }
}