TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/labor:2499/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-093d319a-eb35-4327-944f-c04fda125f13",
      "cw-1a7fa0a9-663e-46cd-918c-9bb2bc6c664b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-14c61291-33b6-40b4-b349-d6eeff8a2d52",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/labor:2499/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1a7fa0a9-663e-46cd-918c-9bb2bc6c664b",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/labor:2499/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}