Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/30728",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-75009dc1-74db-405b-a53a-863f571356ae",
      "cw-abf876a5-03c7-492d-a8b5-d3f8aaef5e1c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3f7b02b9-f076-4edd-b880-6b374f04d2ae",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/30728",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-abf876a5-03c7-492d-a8b5-d3f8aaef5e1c"
  }
}