Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/30051/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0bb90081-20d8-4a63-87ee-3084b1cdbdde",
      "cw-996c27fa-e301-4cae-972c-fbb24df4d203"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-88768500-4fc1-44b1-838e-caad7d3896c5",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/30051/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-996c27fa-e301-4cae-972c-fbb24df4d203"
  }
}