Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/02mjY7j/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua548038/w9NnGYQ",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-08e20c1e-9f9d-45d1-87f5-9a44c8927206",
      "cw-415bec7a-e203-4747-9b8d-1c39d0fa48a3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a3104783-0293-4b1a-af5b-cd339ae66d22",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/02mjY7j/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-415bec7a-e203-4747-9b8d-1c39d0fa48a3",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}