Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://mediacommons.unl.edu/luna/servlet/iiif/m/RUMSEY~8~1~35822~1201308/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-60fb69d4-7839-4538-958a-db7992f925ef",
      "cw-f0ab672d-3269-4c85-afda-7d27a4c4b887"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ec5bbe21-7895-4d77-9e6e-19058d30acb9",
    "manifestId": "https://mediacommons.unl.edu/luna/servlet/iiif/m/RUMSEY~8~1~35822~1201308/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f0ab672d-3269-4c85-afda-7d27a4c4b887"
  }
}