Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://zenodo.org/api/iiif/record:18620/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://zenodo.org/api/iiif/record:18620/canvas/gl_anthrome.tif",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6c60565d-ca97-44ef-baf9-8a8dcb26ef51",
      "cw-c22809e5-4f59-493e-9831-a9b8f0ce9c2c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-20b55b3c-ca4e-49cc-939c-7c3cd252141c",
    "manifestId": "https://zenodo.org/api/iiif/record:18620/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c22809e5-4f59-493e-9831-a9b8f0ce9c2c",
    "thumbnailNavigationPosition": "far-right",
    "visibleCanvases": []
  }
}