Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504056_00139_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6cb345f6-35c0-46c1-936a-63b99d152a5d",
      "cw-df4f9ceb-2b24-440f-b357-cf7fcca89791"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-88710580-86b6-45d2-a1c6-d39483c95536",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504056_00139_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-df4f9ceb-2b24-440f-b357-cf7fcca89791",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10504056_00139_u001",
      "navDate": "1849-02-06",
      "multId": "bsbmult00000009",
      "lastSearchUrl": null
    },
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504056_00139_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}