Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/21085",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c81e8845-304d-4e57-ae03-d5fe9f9cb8fe",
      "cw-f5bc212d-2153-4f63-8d5f-059bfd177515"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b0b13470-a90e-45da-a945-ceebdcc87b3c",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/21085",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f5bc212d-2153-4f63-8d5f-059bfd177515"
  }
}