Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/33417/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d1f1d97a-e079-4dc7-af4d-5bcecbcff91c",
      "cw-4d8a2d80-95ef-4729-ae24-876863a86276"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4217d3f8-1272-4d70-9fe2-427be5504f1a",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/33417/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4d8a2d80-95ef-4729-ae24-876863a86276"
  }
}