Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52513",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d6533d10-9b38-4cc3-92ae-4508d620f6ce",
      "cw-9d6837ac-6ce5-40d4-8973-bbd9ce25d4c1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fc07f7c8-4910-4979-b7d3-430e0088ebea",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52513",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9d6837ac-6ce5-40d4-8973-bbd9ce25d4c1"
  }
}