Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZpwJE9e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-06f09284-2696-4634-924d-87755828889a",
      "cw-1f4f91db-1867-4648-a1e5-cc25b743ba94"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7a8d18c8-49f7-47cd-9e30-91ed36238f36",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZpwJE9e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1f4f91db-1867-4648-a1e5-cc25b743ba94"
  }
}