Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/63919",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9187305d-d15a-4dc1-889c-813907491506",
      "cw-3e0c3777-8914-424c-9c4b-0398295bfabb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-85ab25bd-4b22-47fb-8ec5-99264cee0997",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/63919",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3e0c3777-8914-424c-9c4b-0398295bfabb"
  }
}