Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/8327/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-aaea46c4-1e41-4eeb-8924-e5c4a0abd22a",
      "cw-7978bf08-595e-448c-bd01-9acaf85b6057"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-549cf043-4629-4d55-93e1-d2b3d9c2ab9c",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/8327/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7978bf08-595e-448c-bd01-9acaf85b6057"
  }
}