Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/24251/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4ff4665d-0b1f-4028-9188-3daffb68adb8",
      "cw-db59815a-023a-4ef1-ab7d-dfc27be67981"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3cf8c89d-3f52-479a-982c-564197292881",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/24251/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-db59815a-023a-4ef1-ab7d-dfc27be67981"
  }
}