Mirador Viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00077537/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-df0c6d8c-439d-4a89-b7e7-3caee8ea0e80",
      "cw-695abdf0-5516-413e-8caa-87d2e80a5958"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0daa5fd8-2358-4ac6-86f3-863318525724",
    "manifestId": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00077537/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-695abdf0-5516-413e-8caa-87d2e80a5958",
    "thumbnailNavigationPosition": "far-right",
    "allowClose": false,
    "canvasIndex": -1,
    "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%3Absb00077537",
    "loadedManifest": "https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00077537/manifest",
    "shiftBookView": false,
    "switchCanvasOnSearch": true,
    "view": "book"
  }
}