Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/24275/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-46c3d8bd-2521-4658-a464-4d9cc2eb5fbb",
      "cw-2a06caf6-912f-4da4-aeb9-d261a5a99fd7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4a2a6325-5232-4f59-8617-0b26c6c9d765",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/24275/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2a06caf6-912f-4da4-aeb9-d261a5a99fd7"
  }
}