Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/10442/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e2bab3ca-6330-455f-b527-57a5c9a01a9a",
      "cw-c97a1e89-817f-409c-bd75-86c99c65155f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-38be8ce2-67bb-4e95-bce3-de2ca67ca5c0",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/10442/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c97a1e89-817f-409c-bd75-86c99c65155f"
  }
}