Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kLrVv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8899b9fc-c9fa-47f1-b3d9-f37e7ea44071",
      "cw-faf0be96-93bf-4682-8423-8ccdd9f2f44c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-201bbced-57ff-4dc5-be11-b8acdfa63daa",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kLrVv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-faf0be96-93bf-4682-8423-8ccdd9f2f44c"
  }
}