Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/9802/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ac5dab78-4189-487e-bf8e-aa2682aad635",
      "cw-86079ffb-86a2-47f1-9e5b-71541cc9f4bc"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-042c0b1f-7603-4b2e-accd-d506d9058e33",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/9802/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-86079ffb-86a2-47f1-9e5b-71541cc9f4bc"
  }
}