Mirador viewer

TypeError: Failed to fetch
{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.sma.unibo.it/smaunibo/containers/vQBl3dX/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1201cf07-0a0d-474a-a021-7324ee2bc0de",
      "cw-d1a60fec-b279-4f9f-bf11-529b2a19556c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2639ef5d-5e03-46d2-bd10-de5634e618d6",
    "manifestId": "https://dam.sma.unibo.it/smaunibo/containers/vQBl3dX/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d1a60fec-b279-4f9f-bf11-529b2a19556c"
  }
}