Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://sandbox.zenodo.org/api/iiif/record:180070/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://sandbox.zenodo.org/api/iiif/record:180070/canvas/2477F58-03-01-Vorsatzblatt-posthorn%20in%20crowned%20shield-EM-bearbeitet.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-afb935e7-d48b-4f3e-b495-972e332d4ef1",
      "cw-a8cd8224-4a1d-4e4a-8174-74b19f81509b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-dae75280-074e-4d37-8836-442e4fb8544c",
    "manifestId": "https://sandbox.zenodo.org/api/iiif/record:180070/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a8cd8224-4a1d-4e4a-8174-74b19f81509b",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}