Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/30219/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ede4235c-55c8-4e8e-8229-d2115bb6833e",
      "cw-1619a790-3534-494e-8063-a2a64b03781e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fb5e8ec4-5de2-4405-8b06-87ee374cdee7",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/30219/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1619a790-3534-494e-8063-a2a64b03781e"
  }
}