Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/27385/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-530a0e85-cedd-402a-b627-5bd7c191fa78",
      "cw-9320a769-d404-4be7-8073-724db97825b9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-85e9f9a2-5dcc-494a-b8c9-e54ed257ddc8",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/27385/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9320a769-d404-4be7-8073-724db97825b9"
  }
}