Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/42140",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-43698eb1-bde9-42ac-9bf5-aa78d11bc552",
      "cw-75f5fc5c-705d-467c-95d5-c4af2a66525a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-02442050-eb92-4140-9a81-2d58f76ed948",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/42140",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-75f5fc5c-705d-467c-95d5-c4af2a66525a"
  }
}