Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/13384/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0d3404e6-1f8b-40a6-9648-da686eb05850",
      "cw-cfddb31e-a8c5-4281-ad58-05ab43e21d64"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ba6b9b65-2e2f-4b11-84c4-5b8fcc2c50c5",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/13384/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-cfddb31e-a8c5-4281-ad58-05ab43e21d64"
  }
}