TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digitalcollections.library.gsu.edu/iiif/2/university:285/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-072552bb-db2b-4e8f-8fda-2b140d6fc6b5",
      "cw-fab3fffb-701e-4b28-b66e-0cff54a06c12"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cd0db537-cb21-448f-ba52-8e8574334203",
    "manifestId": "https://digitalcollections.library.gsu.edu/iiif/2/university:285/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fab3fffb-701e-4b28-b66e-0cff54a06c12",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://digitalcollections.library.gsu.edu/iiif/2/university:285/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}