Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AVoqGe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f155af84-223f-47f1-a37c-b5956796ba43",
      "cw-75b0429f-d7eb-4258-9f2b-89ff1799fd72"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fa0ff572-e618-4f7c-ad5e-5a6a7f7bc50d",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AVoqGe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-75b0429f-d7eb-4258-9f2b-89ff1799fd72"
  }
}