Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503764_00527_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bf25e190-477f-416a-a2cc-32696f9f603a",
      "cw-26f516c1-3820-4efd-b9ac-89c31ceb1502"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-99bdd4cd-2723-498b-9628-4f1e7b8e2eae",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503764_00527_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-26f516c1-3820-4efd-b9ac-89c31ceb1502",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503764_00527_u001",
      "navDate": "1840-10-23",
      "multId": "bsbmult00000020",
      "lastSearchUrl": null
    },
    "canvasIndex": 0,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503764_00527_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}