Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/54980",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-577299c1-8304-4832-9279-015593a48141",
      "cw-f4d467e8-dd91-486b-b70d-def9aaf8049e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-777715bb-05cb-463b-944e-72484233994d",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/54980",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f4d467e8-dd91-486b-b70d-def9aaf8049e"
  }
}