Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/28911",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ec050919-aa3c-4b2f-a795-e956b1123c26",
      "cw-f82af577-002f-4a08-8157-8827e7612aba"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-431f79e0-f45e-4a61-ba2a-95517a775bd7",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/28911",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f82af577-002f-4a08-8157-8827e7612aba"
  }
}