TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/broadcast:778/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-57fed599-9981-4743-ad7b-bb6936093c67",
      "cw-33602786-2392-4dae-8bc3-ee822312833f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d8c70c1e-2a76-4924-8e15-c75e28ba27d2",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/broadcast:778/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-33602786-2392-4dae-8bc3-ee822312833f",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/broadcast:778/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}