Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52028",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-58aef53a-3892-4513-a77e-be8115da379c",
      "cw-1dce1a5f-1f8a-42e6-9125-73d63ff589cf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-448128e3-bc21-4c26-9acf-a1a135d525cf",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52028",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1dce1a5f-1f8a-42e6-9125-73d63ff589cf"
  }
}