Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/74391",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-06d5e5c6-398a-474e-ad53-c52365265466",
      "cw-ff001fd2-2825-478d-aac4-3532a1906726"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bd52dbbd-d572-4177-b719-8bc26d3fd79d",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/74391",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ff001fd2-2825-478d-aac4-3532a1906726"
  }
}