TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16843/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c33ad016-0d58-4b71-8b28-b6d9bc0bf871",
      "cw-4a46d602-24ef-4d58-8f93-6f1874a01f1a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5e7d5246-b805-44e2-a6fd-8097901816fe",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16843/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4a46d602-24ef-4d58-8f93-6f1874a01f1a",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16843/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}