Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/40019",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ab7f04ff-1bce-42ab-a843-9c94fcc96365",
      "cw-2d3672b6-62ee-4109-9c24-58bc13d72867"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f3a721cf-e941-4576-8016-a8663f559d4c",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/40019",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2d3672b6-62ee-4109-9c24-58bc13d72867"
  }
}