Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/74429",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-bbff851c-6806-481f-acd6-795ce91630fd",
      "cw-8449346e-213f-4874-a454-f8826aba72d5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-366fd5b0-fece-497c-8732-a621cffbb72c",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/74429",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8449346e-213f-4874-a454-f8826aba72d5"
  }
}