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TypeError: Failed to fetch

{
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    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/5B6revm/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua2177487/Ly8mOQK",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
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    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3b088e84-db99-45a6-b474-f6819f76d0fa",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/5B6revm/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fb4b7b6c-e0f1-45a0-962d-cf0d312c4663",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
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}