TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/university:804/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8ca525f9-97ad-40ab-8a1a-4b17d0bac1f4",
      "cw-0423f9c5-eba0-4290-bc8e-6e85f0227bf9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-14ed4771-745a-4fd6-add5-c4bb312548fb",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/university:804/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0423f9c5-eba0-4290-bc8e-6e85f0227bf9",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/university:804/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}