Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/56797",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f68ea9b8-bbdc-48fa-95e4-ee2c3bba5aa1",
      "cw-240ce6d7-f9a5-4e15-872d-fe27223fa422"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-18dcdc31-0ab5-499e-a269-ab069964b87c",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/56797",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-240ce6d7-f9a5-4e15-872d-fe27223fa422"
  }
}