TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://digitalcollections.library.gsu.edu/iiif/2/university:5925/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1ae441f6-949d-4717-a199-af3808a31087",
      "cw-c2c79697-2bf9-43f6-90d0-6d3609a64cac"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ceed8c2e-8cbf-43f0-9528-0008c899ef38",
    "manifestId": "http://digitalcollections.library.gsu.edu/iiif/2/university:5925/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c2c79697-2bf9-43f6-90d0-6d3609a64cac",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://digitalcollections.library.gsu.edu/iiif/2/university:5925/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}