Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/EZnGzMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-380b4fe1-16eb-431b-ae10-b453acb25b28",
      "cw-c266b59c-3841-499b-b014-b1aa04843ad5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-454e759e-badb-4632-a6a1-db25f0569e32",
    "manifestId": "https://dam.iuav.it/iuav/containers/EZnGzMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c266b59c-3841-499b-b014-b1aa04843ad5"
  }
}