Mirador viewer

TypeError: Failed to fetch
{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.sma.unibo.it/smaunibo/containers/JnRXmPD/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3bd40414-f29b-43f2-88ac-85c9d092e4c6",
      "cw-54bab428-8076-4340-b861-8688c30eb693"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cb61c667-9fde-4dfa-a18c-6c623ec0f15b",
    "manifestId": "https://dam.sma.unibo.it/smaunibo/containers/JnRXmPD/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-54bab428-8076-4340-b861-8688c30eb693"
  }
}