Mirador Viewer

TypeError: Failed to fetch

{
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    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11129939/manifest",
    "isFetching": false
  },
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    "maximized": false,
    "rangeId": null,
    "rotation": null,
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    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d5f8352b-ec5a-4059-8773-9bf14f57074a",
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    "allowClose": false,
    "canvasIndex": 0,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11129939/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}