Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503771_00477_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2f99b48f-0b05-4e52-a8b2-d6df100f2ce1",
      "cw-1b7e582a-244e-4c83-a32e-5911106e89ba"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c89aa6c9-a902-43db-8f71-dad5dba93ee5",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503771_00477_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-1b7e582a-244e-4c83-a32e-5911106e89ba",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503771_00477_u001",
      "navDate": "1844-04-27",
      "multId": "bsbmult00000020",
      "lastSearchUrl": null
    },
    "canvasIndex": 3,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503771_00477_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}