TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://curate.library.emory.edu/iiif/81937pvn67-cor/manifest?manifest=https://curate.library.emory.edu/iiif/81937pvn67-cor/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
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      "cw-9e2192a1-d919-40e7-999b-6034e9528d27"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e275987e-62fd-4e04-9a7b-59bc3d16d635",
    "manifestId": "https://curate.library.emory.edu/iiif/81937pvn67-cor/manifest?manifest=https://curate.library.emory.edu/iiif/81937pvn67-cor/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9e2192a1-d919-40e7-999b-6034e9528d27",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://curate.library.emory.edu/iiif/81937pvn67-cor/manifest?manifest=https://curate.library.emory.edu/iiif/81937pvn67-cor/manifest",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}