Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504226_00491_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-dba0339b-bdb4-406e-ab16-151373f69f46",
      "cw-23bedcbb-21e0-4b7d-974d-310a24d5a037"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4b4d89cb-2c05-49c1-b86f-81d7711b17b7",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504226_00491_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-23bedcbb-21e0-4b7d-974d-310a24d5a037",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10504226_00491_u001",
      "navDate": "1817-08-20",
      "multId": "bsbmult00000023",
      "lastSearchUrl": null
    },
    "canvasIndex": 0,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504226_00491_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}