Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArO8ke/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ba2a21ee-acf4-4ceb-911b-9b02c6d341f5",
      "cw-a1630cbe-76c6-4ada-ae86-4af4959ddc04"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-89affa25-d18b-4f1f-9ed9-afec50b488f0",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArO8ke/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a1630cbe-76c6-4ada-ae86-4af4959ddc04"
  }
}