Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/20127",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c445d628-56f0-446d-bad7-ed18712233ae",
      "cw-22b58c06-602f-4972-bee1-039d9cc6c26a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-690af3f3-54f2-481d-a48f-f678322f97ec",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/20127",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-22b58c06-602f-4972-bee1-039d9cc6c26a"
  }
}