Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503757_00307_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bfe20421-c389-4951-9ce1-560824d8d043",
      "cw-dd2b4875-7966-46f4-acdb-87733c7d2668"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-574e2944-2444-4d4e-bd35-777d6c2bcf37",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503757_00307_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-dd2b4875-7966-46f4-acdb-87733c7d2668",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503757_00307_u001",
      "navDate": "1837-03-15",
      "multId": "bsbmult00000020",
      "lastSearchUrl": null
    },
    "canvasIndex": 0,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503757_00307_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}