Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/22713/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-29ade60b-cc81-4aca-8f2b-7351d9b36e56",
      "cw-d0742a6d-6e1f-4237-b83d-d5397fa7149d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-31e0599c-778a-432d-8437-748c9b4454c9",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/22713/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d0742a6d-6e1f-4237-b83d-d5397fa7149d"
  }
}