Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/42086",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-484773fe-3a93-4a2b-9c61-ba2f2b97a9d3",
      "cw-04738949-d706-49c2-af4c-3512aec4a8e1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-829bca9a-cad6-41de-bd16-ace8104d7c83",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/42086",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-04738949-d706-49c2-af4c-3512aec4a8e1"
  }
}