Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11303812/manifest",
    "isFetching": false
  },
  "window": {
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    "companionAreaOpen": true,
    "companionWindowIds": [
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    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-73443a1b-1e63-41a9-b8b5-70b0aaa34672",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11303812/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-86fadc6f-74d1-4a2c-bae2-9d9e1f8d7e95",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "canvasIndex": 0,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11303812/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}