Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/4019",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ce043d2e-0bac-46b0-803a-9a1a61d70f83",
      "cw-252ff161-b77b-4622-bfe5-6c582db0d504"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-636fc015-f139-490b-bdfe-02e162649ae8",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/4019",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-252ff161-b77b-4622-bfe5-6c582db0d504"
  }
}