Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua549135/LeqmPjV",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-03625f9c-3fc0-4e5b-9a36-34cfaeba5e1d",
      "cw-56ad1b34-4830-4670-b909-f966d81fa056"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e6b7abd0-3610-49ca-9e5e-fa6674d28b30",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-56ad1b34-4830-4670-b909-f966d81fa056",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}