Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5gN84bz/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua600710/LDRMEld",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3b10a25c-b77b-4e11-a8a3-403a737f2061",
      "cw-9843d799-4c8e-4e32-a753-cb03028b5f52"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-67018645-d2b0-430c-8c8f-37e8002177e3",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5gN84bz/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9843d799-4c8e-4e32-a753-cb03028b5f52",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}