Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wrO386y/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua18236034/wbXqA3E",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5d8bb741-c3c1-4f16-9e5f-f8374e22404c",
      "cw-55aba7ba-3556-4d63-b10e-5203ea6cc5be"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2eff50b1-21b4-4a5d-864d-a31c26121e17",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wrO386y/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-55aba7ba-3556-4d63-b10e-5203ea6cc5be",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}