TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/university:967/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7092fb28-eab8-4b8d-ad80-91eac09f9f5e",
      "cw-02111016-c3b7-4670-ac8d-d2502b023037"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ef34b232-25d2-4ecf-9a49-43d879c5196d",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/university:967/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-02111016-c3b7-4670-ac8d-d2502b023037",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/university:967/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}