Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wlm1ED6/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua34998306/5VVpzdV",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3376ebf6-c027-4edb-be06-c301d88a61a4",
      "cw-347ba11c-230d-498e-b2ab-66c40b522a8f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8cd3b2d6-f2c3-4867-95e9-62365ff7d1a6",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wlm1ED6/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-347ba11c-230d-498e-b2ab-66c40b522a8f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}