Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/4829/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-20212d89-430c-4d84-a03e-0bf3cd11bb0e",
      "cw-06bf20ef-dfc3-430c-bc74-f235b9aef906"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b5f66d27-4787-4fc3-9b7d-55470d275d18",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/4829/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-06bf20ef-dfc3-430c-bc74-f235b9aef906"
  }
}