Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua35004502/5dWVoxv",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8b786d63-01f3-4c51-af33-db0435b3b0c0",
      "cw-85dc35bc-f0f7-4a94-8fcf-78c40e2a4111"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a1b82124-7a63-435d-9414-b09b99906414",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/wrW1VOn/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-85dc35bc-f0f7-4a94-8fcf-78c40e2a4111",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}