Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjldlqA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ef8a7251-e5ef-474a-9802-36ff7b7dfd3c",
      "cw-d13128cb-7129-499c-951d-6f59946709a9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5ef4f509-9d43-4694-89ba-bc808d8288a5",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjldlqA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d13128cb-7129-499c-951d-6f59946709a9"
  }
}