Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:5900732/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:5900732/canvas/UrIII_5900731_RGB.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-abd86628-48eb-4732-b2bf-50ba1eb16678",
      "cw-0f658c47-2c17-42b7-87e0-0c9feb732491"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-be98c894-3ab7-4351-b177-861194f8d75e",
    "manifestId": "https://zenodo.org/api/iiif/record:5900732/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0f658c47-2c17-42b7-87e0-0c9feb732491",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}