Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/16079/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-569644ce-1480-43f7-9de7-efc42062e515",
      "cw-560d8cd4-dc2a-4d98-82ae-8b3a0fe62be7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f93e0a90-5bbb-4c56-b3dd-2b524ad08dc0",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/16079/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-560d8cd4-dc2a-4d98-82ae-8b3a0fe62be7"
  }
}