Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vLnwkoe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d012fbda-a508-4aed-8444-eab18454a8d2",
      "cw-4071bbe0-2f02-4455-8ffa-b43358fcf2f9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0d659ce9-4e4b-4d13-873b-7e879d392935",
    "manifestId": "https://dam.iuav.it/iuav/containers/vLnwkoe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4071bbe0-2f02-4455-8ffa-b43358fcf2f9"
  }
}