Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/30731",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e4ca2d3b-1d66-49b2-bac7-6ebfee10ca09",
      "cw-5defd99e-0b1f-42c4-87b1-e542289ff59a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6138c599-ed11-4884-b92e-9bcddb4be705",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/30731",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5defd99e-0b1f-42c4-87b1-e542289ff59a"
  }
}