Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxB6mxe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9c320e50-123a-445c-9a79-7150280c710c",
      "cw-5242906f-abef-42d7-a61f-afed1d57e97e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cf404bcf-ba37-481d-a9a5-ce9ff623bd20",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxB6mxe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5242906f-abef-42d7-a61f-afed1d57e97e"
  }
}