TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16385/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7c16d487-d36e-4d0a-bf7a-2346761c5108",
      "cw-b3027d4a-b926-4e83-ba8a-e3523c4a12c4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f7c36889-9ffe-43fe-98f1-658d7a28dc3e",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16385/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b3027d4a-b926-4e83-ba8a-e3523c4a12c4",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/arwg:16385/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}