Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5VVOMXV/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35046131/0JaYRMP",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8c726e55-087b-4463-8905-608587108bd1",
      "cw-63c42b3b-6f6f-4d5c-b168-9d1d98361625"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-787049a2-bdc1-4014-9f20-8542c765bdf5",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5VVOMXV/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-63c42b3b-6f6f-4d5c-b168-9d1d98361625",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}