Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eg8X9nZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-591a5e45-ae3d-4f3f-95b3-82d98decea77",
      "cw-a328d9f3-7da2-462d-bf93-1cdace6c5d04"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-422d09ac-9408-4db2-bd7b-949faa0ece94",
    "manifestId": "https://dam.iuav.it/iuav/containers/eg8X9nZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a328d9f3-7da2-462d-bf93-1cdace6c5d04"
  }
}