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-d33791cf-9b1e-4dfd-90b5-6cc0c9485193",
      "cw-5aa800f8-b13d-430b-bff2-9965241079d4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9fbe6c12-a5cc-4ae2-8aa6-ee1e7ef307e3",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wE4Pdoq/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5aa800f8-b13d-430b-bff2-9965241079d4",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}