Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5VVOMXV/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35046131/0JaYRMP",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a734ec87-732c-4f44-a293-00281f2ba716",
      "cw-3d65c001-4fc0-46ca-bc57-a9f2a1e8c2ba"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-47e55217-e313-464b-9c0f-b68ed1a471c5",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5VVOMXV/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3d65c001-4fc0-46ca-bc57-a9f2a1e8c2ba",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}