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/Ly6gJRD",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c991bc20-007c-4bae-95b6-89d692b4ce55",
      "cw-bd91e844-5bb2-4263-b3f7-cacc2929c09a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-96e3ad9d-f58f-4e5c-acb9-c2b2c1b48b82",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bd91e844-5bb2-4263-b3f7-cacc2929c09a",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}