Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/3296/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-78321cf4-be48-4186-9f84-24b9832cbd15",
      "cw-6fe0a9bc-7f43-4cb6-a107-b379cabc3a8f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ecb8219f-72df-43a8-9fb1-8ec2744efd47",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/3296/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6fe0a9bc-7f43-4cb6-a107-b379cabc3a8f"
  }
}