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TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/57mydZO/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua3651658/w6WQNgO",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-dceb1f05-6fb7-4fd8-9a82-9afce7c91fca",
      "cw-4e4f3af5-91c5-41b3-ad67-ee2e2dcdedd5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b51e4afd-7c00-4fe9-9149-d43cac6618a4",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/57mydZO/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4e4f3af5-91c5-41b3-ad67-ee2e2dcdedd5",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}