Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/81567",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-89053e80-6df4-412e-bd1e-4e7287e08419",
      "cw-bcda335a-73c9-4cdd-8c79-0b7d17c89451"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cfdd4a0f-6946-4128-879a-8f88fa81724f",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/81567",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bcda335a-73c9-4cdd-8c79-0b7d17c89451"
  }
}