Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/9279/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c96ac169-72e1-45bc-b6e7-e1789b28aadd",
      "cw-0f14403b-2638-4799-82f0-711fe6636a8f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5f1e2b76-0b5a-4497-9525-43b753995ecb",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/9279/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0f14403b-2638-4799-82f0-711fe6636a8f"
  }
}