TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://digitalcollections.library.gsu.edu/iiif/2/university:6574/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2c88a865-57af-41c4-aff5-96e5044426b1",
      "cw-485db60e-f371-4869-a41a-28687e560ccf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a0df3d77-757d-484d-819d-a01941da341f",
    "manifestId": "http://digitalcollections.library.gsu.edu/iiif/2/university:6574/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-485db60e-f371-4869-a41a-28687e560ccf",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://digitalcollections.library.gsu.edu/iiif/2/university:6574/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}