Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503820_00379_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e5d41f8c-d64f-4620-8288-d51dc2f97c83",
      "cw-1de6df97-6d54-4e70-bf52-bdcc3070e440"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ed15d4f0-39fa-4d6e-a483-e381fc6a7f12",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503820_00379_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-1de6df97-6d54-4e70-bf52-bdcc3070e440",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503820_00379_u001",
      "navDate": "1866-10-19",
      "multId": "bsbmult00000020",
      "lastSearchUrl": null
    },
    "canvasIndex": 6,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503820_00379_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}