Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArOVYe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cab4fce2-6bd2-484b-a29a-89bec58b1fcd",
      "cw-000ef166-3fcc-47eb-a79a-e359be22f864"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d8c2ff8e-dec3-470c-8dea-e27d24fef490",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArOVYe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-000ef166-3fcc-47eb-a79a-e359be22f864"
  }
}