Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.falck.it/falck/containers/r9b21v9/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-838066fe-8f5c-4616-9b96-df4d029b6d02",
      "cw-ebf8eebd-04fa-4433-8808-401428612fde"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0f27d552-aa14-4f06-aa00-c48e7ea68ae5",
    "manifestId": "https://dam.falck.it/falck/containers/r9b21v9/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ebf8eebd-04fa-4433-8808-401428612fde"
  }
}