Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/28797",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7559f491-f0fc-4b6c-8b6f-01daf0c7e136",
      "cw-3e3bc0c9-14f0-43fc-9c55-d9c37526c67a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6346249d-13e3-4228-b2cb-e345ef898c45",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/28797",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3e3bc0c9-14f0-43fc-9c55-d9c37526c67a"
  }
}