Mirador Viewer

TypeError: Failed to fetch

{
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    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11129920/manifest",
    "isFetching": false
  },
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    "maximized": false,
    "rangeId": null,
    "rotation": null,
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    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-31235287-393d-44d9-bdd7-7b06afd930d4",
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    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11129920/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
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}