Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/26131/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3e1bf2df-c723-4c05-ab4a-265c652ab712",
      "cw-ff5b3b90-f68b-4e4b-8236-2fd72e80e03b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-69377011-270a-4232-a65f-152d2e22a8aa",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/26131/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ff5b3b90-f68b-4e4b-8236-2fd72e80e03b"
  }
}