Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/w9D4y9y/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c664bc4a-b72b-4aa2-badb-6cb395aca7d2",
      "cw-48f123cb-8f3b-494d-9e22-a89714c6f815"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "w9D4y9y",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/w9D4y9y/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-48f123cb-8f3b-494d-9e22-a89714c6f815",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}