Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/statelibrarypa/iiif/50a21785-4df4-46cd-859d-aacc645aea75/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-eaa88def-2202-456d-876d-28d8897815d4",
      "cw-3af5bee3-2fc8-4b19-80e6-ecb2e522d12c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-39cc2443-3dbc-40cc-a9b7-79b832bc59d7",
    "manifestId": "https://iiif.quartexcollections.com/statelibrarypa/iiif/50a21785-4df4-46cd-859d-aacc645aea75/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3af5bee3-2fc8-4b19-80e6-ecb2e522d12c",
    "thumbnailNavigationPosition": "far-bottom"
  }
}