Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dZY6GEv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a3ed4b20-9551-445b-bbda-b0c2fd67d84e",
      "cw-48d107cf-bc31-47de-b286-35ca2d5037fb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8bb65d68-6752-4446-aa27-59d9aa23c372",
    "manifestId": "https://dam.iuav.it/iuav/containers/dZY6GEv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-48d107cf-bc31-47de-b286-35ca2d5037fb"
  }
}