Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503864_01309_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6b270dd8-0c7b-4ebe-a1b0-84a9c3a79a83",
      "cw-7f797b83-0fff-46dc-9ff2-34231001b792"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-658267e9-203d-4b2e-be1b-01dc23583a87",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503864_01309_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-7f797b83-0fff-46dc-9ff2-34231001b792",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb10503864_01309_u001",
      "navDate": "1852-12-02",
      "multId": "bsbmult00000663",
      "lastSearchUrl": null
    },
    "canvasIndex": 0,
    "dfgViewerUrl": null,
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb10503864_01309_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}