Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/27350/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3beeaa37-dafb-4c4a-9667-c1b7e74eedf2",
      "cw-2a719a21-1105-4673-9022-490d98d3a597"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d2ddf658-3893-4a3d-bf16-5e948ed139e4",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/27350/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2a719a21-1105-4673-9022-490d98d3a597"
  }
}