Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AkEwg7Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-21d9aa1f-70d8-47fa-ab93-d7ca1882adbd",
      "cw-2cec0fd4-bce2-43e3-92f8-59cebf00ab28"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c96b5a98-d7e9-4ff5-95dc-f9ef37b04f8f",
    "manifestId": "https://dam.iuav.it/iuav/containers/AkEwg7Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2cec0fd4-bce2-43e3-92f8-59cebf00ab28"
  }
}