Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/28828",
    "isFetching": false
  },
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    "id": "window-c891038c-de03-4d5e-95ce-8f846e6fd1a1",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/28828",
    "maximized": false,
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    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-729f5f09-84be-4947-bbe1-cc23931f4ecb"
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}