Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/16317/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1078e19c-1654-4375-9b56-5025dbde2f24",
      "cw-6fc72a11-66c0-492a-86e8-c8562fe9d38c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-db161493-1dbd-4344-b0db-73f281cb75ad",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/16317/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6fc72a11-66c0-492a-86e8-c8562fe9d38c"
  }
}