Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10502074_00447_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9da5529a-3726-4fa9-80c9-39425e5a72b1",
      "cw-2829a6e3-8a51-484e-a351-ad3c593afb27"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-02e4fb3f-6e85-48c8-a409-6597925342b3",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10502074_00447_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-2829a6e3-8a51-484e-a351-ad3c593afb27",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10502074_00447_u001",
      "navDate": "1819-04-01",
      "multId": "bsbmult00000267",
      "lastSearchUrl": null
    },
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10502074_00447_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}