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TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11178454/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a8daaa70-e5f0-433f-9abf-c0ba875474d8",
      "cw-217e9775-57be-4ffb-a0e5-121dc49dc8f8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a26aa2bf-abc5-4f52-8c30-f39f9494fbcb",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11178454/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-217e9775-57be-4ffb-a0e5-121dc49dc8f8",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11178454/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}