Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503829_00909_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-89c3ea19-2ef6-45dc-a117-4c712370a90b",
      "cw-7adae675-cf61-45d0-8156-3cc6fc66bb47"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f01c8e27-13ee-4fb0-b53c-e6b2ba0c775b",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503829_00909_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-7adae675-cf61-45d0-8156-3cc6fc66bb47",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503829_00909_u001",
      "navDate": "1869-12-29",
      "multId": "bsbmult00000020",
      "lastSearchUrl": null
    },
    "canvasIndex": 8,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503829_00909_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}