Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ArOR80e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3ac9a76a-c80d-4ac4-be9d-a22a94986248",
      "cw-eb9d50dc-ef2f-4e91-a139-e33a1fdb551c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0d739f58-03f9-4c97-aa02-a8b71595e0fc",
    "manifestId": "https://dam.iuav.it/iuav/containers/ArOR80e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-eb9d50dc-ef2f-4e91-a139-e33a1fdb551c"
  }
}