Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/51907",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-42eac197-6709-439d-833a-d38c44570655",
      "cw-361c9a01-fdee-4eb6-80ca-5ead068ef98e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-eee7fbed-be19-4761-8c1f-ba198bdb85db",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/51907",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-361c9a01-fdee-4eb6-80ca-5ead068ef98e"
  }
}