Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10505965_00309_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e62fb6dc-29bc-4502-8ee3-09c38b20b2fa",
      "cw-49068a87-a808-4718-bd28-ee0aab4da9f2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-843b7fd6-a4e6-4ce1-9dab-2fdab62c31fc",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10505965_00309_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-49068a87-a808-4718-bd28-ee0aab4da9f2",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10505965_00309_u001",
      "navDate": "1821-06-26",
      "multId": "bsbmult00000014",
      "lastSearchUrl": null
    },
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10505965_00309_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}