Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/33419/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b240c231-a467-46c2-9f09-8d91e17dcee4",
      "cw-d0a97efc-e429-4cb0-9f15-662c73abfe99"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-607b9112-a16b-423a-affb-dadb67ba40a0",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/33419/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d0a97efc-e429-4cb0-9f15-662c73abfe99"
  }
}