Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/9450/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-532fdca4-5921-4673-bf88-91c57b1dcc5a",
      "cw-bab81448-48db-4151-b929-206a7ee2477e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-716413bc-1599-4f94-9247-dbe4547f9bfa",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/9450/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bab81448-48db-4151-b929-206a7ee2477e"
  }
}