Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:5436500/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:5436500/canvas/oo_508237.PNG",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4e62912c-2f9a-4e4a-989d-f7db3984305b",
      "cw-147d300d-8dde-4478-9766-9ce650c7735c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-2759c1a9-680d-4ff6-977b-077824062226",
    "manifestId": "https://zenodo.org/api/iiif/record:5436500/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-147d300d-8dde-4478-9766-9ce650c7735c",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}