Mirador viewer

TypeError: Failed to fetch
{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.sma.unibo.it/smaunibo/containers/kdJ6lad/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bb8d6843-b2f5-4359-9f68-c9ec8e08fda2",
      "cw-fa8bfa0d-e76c-4b14-8744-d27798bfcdfc"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bf64d0ac-6f7d-48b1-9170-6b5cef905b29",
    "manifestId": "https://dam.sma.unibo.it/smaunibo/containers/kdJ6lad/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fa8bfa0d-e76c-4b14-8744-d27798bfcdfc"
  }
}