Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9k7gVv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f24884af-a18d-45c0-a369-634177f6ad72",
      "cw-710e2285-67ce-4777-852e-8eafeba0a027"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c3239abf-f02e-4d65-9b6d-88453a3d6e2b",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9k7gVv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-710e2285-67ce-4777-852e-8eafeba0a027"
  }
}