Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/19396/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e9a26b91-9cc1-4829-8001-b4edf47bdcb2",
      "cw-618adf25-4e6a-410c-bb54-91459b56879b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-850ea42c-be7b-4ed1-8900-77a547c84f93",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/19396/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-618adf25-4e6a-410c-bb54-91459b56879b"
  }
}