Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/54143",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-65a5a696-8b18-4ff3-aa19-e24446e5ff5d",
      "cw-3be3d4e5-d816-45ad-8c66-0b21ff27b94e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6a6facda-b5d3-484a-82ff-1469dfc7e4fc",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/54143",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3be3d4e5-d816-45ad-8c66-0b21ff27b94e"
  }
}