TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://digitalcollections.library.gsu.edu/iiif/2/university:5232/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-496203a7-1c62-4a2d-955b-05ec6cf9b337",
      "cw-0bcc3812-bf0c-4bd3-a20a-39d2bf669e94"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-789c2e35-8509-4988-851c-0dc3f8f06bb9",
    "manifestId": "http://digitalcollections.library.gsu.edu/iiif/2/university:5232/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0bcc3812-bf0c-4bd3-a20a-39d2bf669e94",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://digitalcollections.library.gsu.edu/iiif/2/university:5232/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}