Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/statelibrarypa/iiif/939800a7-6c4f-4966-b388-0ac46c2ffe12/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-55d20aae-122d-4a69-8fbe-7ba02332abfe",
      "cw-fd6a673f-4862-44b0-a2fe-be6fcf030031"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-92ba0dda-8ee9-4231-a30a-446fb13690c3",
    "manifestId": "https://iiif.quartexcollections.com/statelibrarypa/iiif/939800a7-6c4f-4966-b388-0ac46c2ffe12/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fd6a673f-4862-44b0-a2fe-be6fcf030031",
    "thumbnailNavigationPosition": "far-bottom"
  }
}