TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16311/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8e014f15-f66c-4a06-a277-7fe638a06779",
      "cw-e2eb6369-cfe1-4fb1-88f2-46631e980dcf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5158308a-569b-4761-afaa-3d4821fa560f",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16311/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e2eb6369-cfe1-4fb1-88f2-46631e980dcf",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16311/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}