TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/university:936/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-55978a0d-e3a0-4ef8-89b4-2c5630cd9ca4",
      "cw-da70114d-7b5f-4de8-8d03-bebe291973e7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-79d8ce1b-bd55-4658-9f77-12e88867f33e",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/university:936/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-da70114d-7b5f-4de8-8d03-bebe291973e7",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/university:936/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}