Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504411_00249_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-34f99720-4211-458d-b1fa-c2849ab3fe63",
      "cw-67cc5ada-c4ba-4be6-becd-695789c9b3b7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e32cd3a4-8f53-4c6f-b568-534ad60d621c",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504411_00249_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-67cc5ada-c4ba-4be6-becd-695789c9b3b7",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10504411_00249_u001",
      "navDate": "1858-01-16",
      "multId": "bsbmult00000002",
      "lastSearchUrl": null
    },
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10504411_00249_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}