Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/w9Do6ak/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9ac15913-6b8a-4a36-baf4-89c9e373d759",
      "cw-343fade6-5017-41ea-9ca4-f9197566eaf1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "w9Do6ak",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/w9Do6ak/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-343fade6-5017-41ea-9ca4-f9197566eaf1",
    "imageToolsEnabled": true,
    "imageToolsOpen": true
  }
}