Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq0BJQe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-db90c03b-12a9-4309-b392-a20cf11c4aa5",
      "cw-7d2b53be-7962-4b67-ac74-20b579039dd8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-83628eb6-4358-4c76-85f3-5dbed29d36dc",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq0BJQe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7d2b53be-7962-4b67-ac74-20b579039dd8"
  }
}