TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11202420/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8a46fdcd-c019-4d43-a67a-0b904cd1cc17",
      "cw-3237361b-eae5-4157-9294-0f06ee8a7ded"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bc7d0204-d004-4927-8cf2-4f356059260b",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11202420/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3237361b-eae5-4157-9294-0f06ee8a7ded",
    "thumbnailNavigationPosition": "far-right",
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11202420/manifest"
  }
}