Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/33418/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-07778ce8-0f31-4157-8a4e-04998250f50f",
      "cw-f602d5d2-ab97-4a76-8bc9-70c0f48894a5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-755b202c-760c-416c-9b04-bb6f774f1760",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/33418/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f602d5d2-ab97-4a76-8bc9-70c0f48894a5"
  }
}