Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10505840_00731_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3fcbf4a3-6d72-43cf-a8d0-e1f957aba02a",
      "cw-df283084-0a19-4f3f-9f49-80e9aab61980"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-05fe2964-3d0b-4b75-b04f-55535411deb2",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10505840_00731_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-df283084-0a19-4f3f-9f49-80e9aab61980",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10505840_00731_u001",
      "navDate": "1827-06-10",
      "multId": "bsbmult00000450",
      "lastSearchUrl": null
    },
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10505840_00731_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}