Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/27096/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c9c88aaa-704f-40f0-b973-e17cb3367d52",
      "cw-d395b24e-7444-4fc9-97b4-86070acaee54"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-138c70ac-db77-4988-bfcb-0a125682e244",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/27096/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d395b24e-7444-4fc9-97b4-86070acaee54"
  }
}