Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/13368/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2591a343-3db6-4520-8581-8accf516ada8",
      "cw-ed16a2de-5478-4810-a575-b949967b8553"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3de5ba59-ec9d-477d-b8ae-fa3e03a74f66",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/13368/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ed16a2de-5478-4810-a575-b949967b8553"
  }
}