Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/22056/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a10cfed8-b22c-4d6f-9c52-c89c1cfcfb64",
      "cw-08219579-f10d-4410-a712-d280030eab13"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-659d4bae-630b-4a0e-9e45-be1860919ac4",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/22056/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-08219579-f10d-4410-a712-d280030eab13"
  }
}