Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/12334/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cacbf5c6-11dd-4266-a18b-c0c56e3f2c32",
      "cw-c6514287-7683-4a64-b400-bcafa2a6189a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d5294de4-a738-4c2f-85af-6745ef2991e3",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/12334/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c6514287-7683-4a64-b400-bcafa2a6189a"
  }
}