Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503820_00707_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e0354456-6be8-4cdf-a01b-2c8cf40e5b23",
      "cw-4dd119d1-a6f2-45cd-837f-26b1d3154b22"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-79a62e00-948f-466c-85da-29fa8125f6eb",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503820_00707_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-4dd119d1-a6f2-45cd-837f-26b1d3154b22",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503820_00707_u001",
      "navDate": "1866-11-29",
      "multId": "bsbmult00000020",
      "lastSearchUrl": null
    },
    "canvasIndex": -1,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503820_00707_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}