Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AkrpGMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5b35a9a9-1e86-43aa-a7e5-ab37b13e9bea",
      "cw-60887998-f855-403c-9c0f-12ce2c260830"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-28b0880d-5d2f-4baa-852f-004e17668bbe",
    "manifestId": "https://dam.iuav.it/iuav/containers/AkrpGMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-60887998-f855-403c-9c0f-12ce2c260830"
  }
}