Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9rxaq/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35040602/w6xzQ7O",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3c725c2e-ef96-4902-b4a8-4a223ee6511d",
      "cw-098519e2-996f-4bcf-a4b5-25e635ff9f5f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1ef87b1b-b54b-4584-b022-76c0b22e5a97",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE9rxaq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-098519e2-996f-4bcf-a4b5-25e635ff9f5f",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}