Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/2940",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-299af3ad-f0ec-4a2c-85d1-990adfc6a14e",
      "cw-a8ed7d61-27fa-4490-888f-658fdf31c715"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-42103c75-c643-4248-8540-31b27ec4bdaa",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/2940",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a8ed7d61-27fa-4490-888f-658fdf31c715"
  }
}