Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/DvQ3g6e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-76beac10-f811-4621-918c-377e7ab34326",
      "cw-c0d70591-f0af-41e6-903c-9d2bf5fa155b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-986d3e37-fcee-4253-afb3-f0b61b084fa5",
    "manifestId": "https://dam.iuav.it/iuav/containers/DvQ3g6e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c0d70591-f0af-41e6-903c-9d2bf5fa155b"
  }
}