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-4770a5ff-0001-41bf-a29e-ee2f05d7d976",
      "cw-7f9ff9e9-6ff3-4464-a518-484ca40012bf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-51c64740-9030-4217-a125-fec529d4d3d1",
    "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-7f9ff9e9-6ff3-4464-a518-484ca40012bf"
  }
}