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_CMYK.jpg",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1d06a197-fb4f-4a7a-b2a5-4fe5189a600d",
      "cw-01c3cae7-0742-48fc-bb6b-56bf41fce6c8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-6699f456-6be4-475c-988c-378999ae9bb0",
    "manifestId": "https://zenodo.org/api/iiif/record:5900732/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-01c3cae7-0742-48fc-bb6b-56bf41fce6c8",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}