Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/7562/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4251d9ba-33b9-4857-acf7-eb908c75a7b2",
      "cw-67ca39a4-57b2-43ef-bdc5-1bf526b69249"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-feb762ff-a653-411e-aabc-00e092482a15",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/7562/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-67ca39a4-57b2-43ef-bdc5-1bf526b69249"
  }
}