Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/26234/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-68cf7b0c-54d2-4bb8-b9b0-db67be243208",
      "cw-ffbd674b-2723-4d59-a346-1940955478b4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c5ceac39-d8b8-4975-a154-424a94836f1c",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/26234/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ffbd674b-2723-4d59-a346-1940955478b4"
  }
}