Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JZq69Lv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2ae5b0f1-a89d-4112-9109-b588fc8fb186",
      "cw-9852178c-3b76-426b-a933-45bdbaf04e12"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4cb91dba-cd1b-4953-b956-b0f285a83393",
    "manifestId": "https://dam.iuav.it/iuav/containers/JZq69Lv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9852178c-3b76-426b-a933-45bdbaf04e12"
  }
}