Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00133949_00775_u001/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e101929f-5282-4165-ae7f-f6bd12ca7bfa",
      "cw-0f03f322-0b25-4b84-a7ee-f61976a88942"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-58affa4e-37b5-4bf2-823a-e76f628d0fbb",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00133949_00775_u001/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "calendar",
    "thumbnailNavigationId": "cw-0f03f322-0b25-4b84-a7ee-f61976a88942",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "calendarNavigation": {
      "issueId": "bsb00133949_00775_u001",
      "navDate": "1884-04-20",
      "multId": "bsbmult00000011",
      "lastSearchUrl": null
    },
    "canvasIndex": 2,
    "dfgViewerUrl": "https://dfg-viewer.de/show?tx_dlf%5Bid%5D=https%3A%2F%2Fapi.digitale-sammlungen.de%2Fdfg%2Fmets%2Fmods%2Fv1%2Fdigitalobjects%2Fidentifier%2Fmdz-obj-child%3Absb00133949_00775_u001",
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00133949_00775_u001/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": false,
    "view": "single"
  }
}