Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.falck.it/falck/containers/BR4xpLR/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2549971c-2c14-4a93-b87f-7c37ab96d2e0",
      "cw-53cd917f-0ceb-46dd-924f-b64d63e22cce"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-76fbe525-4a9e-48e8-88c1-489c2cd97792",
    "manifestId": "https://dam.falck.it/falck/containers/BR4xpLR/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-53cd917f-0ceb-46dd-924f-b64d63e22cce"
  }
}