Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.falck.it/falck/containers/xknAVr9/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-559fa3ac-1690-4948-b77a-a8db2c9d89ca",
      "cw-544e8a2e-235d-48f2-a17c-41443f025c6d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fded65c1-bab8-4d17-84d7-81a7f51ea13c",
    "manifestId": "https://dam.falck.it/falck/containers/xknAVr9/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-544e8a2e-235d-48f2-a17c-41443f025c6d"
  }
}