Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.libraries.psu.edu/iiif/info/maps1/13327/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-35bb27b6-3e06-4c50-b62e-9062ef92b2b9",
      "cw-720ac4b1-88ad-4343-9443-c8b2b34ea615"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c785e6c6-edc6-43ba-b8a1-1cba616fcb9a",
    "manifestId": "https://digital.libraries.psu.edu/iiif/info/maps1/13327/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-720ac4b1-88ad-4343-9443-c8b2b34ea615"
  }
}