Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/6c64176c-f807-46a7-91f2-9c8237b0ddf3/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3f785b45-ded1-4eda-b806-5aa12353224f",
      "cw-e9ef8058-5faa-468a-892e-56a36e79429f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4feb5ef5-d3a2-4e16-8092-bd6ca54374d2",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/6c64176c-f807-46a7-91f2-9c8237b0ddf3/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e9ef8058-5faa-468a-892e-56a36e79429f",
    "thumbnailNavigationPosition": "far-bottom"
  }
}