Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/8036/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6c72b13c-6739-49f3-a4c9-605c9bf9c964",
      "cw-4541d1ef-61e7-4631-b8eb-ef51625275b0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4d43bfce-f286-41bf-a234-cf0fd8bdc28c",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/8036/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4541d1ef-61e7-4631-b8eb-ef51625275b0"
  }
}