Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/68976",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-101b7a0d-e8c6-496e-9bf9-070a2a42bf11",
      "cw-02852050-8b9e-453a-b17f-9e3c3fe7a313"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4879d0ee-a28e-4972-85b8-cc032ae3498c",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/68976",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-02852050-8b9e-453a-b17f-9e3c3fe7a313"
  }
}