Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/0503e979-8249-4191-bca8-7e357f743f91/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-24538e83-aae2-4736-b8b0-86d7aca64215",
      "cw-26d0cdf5-6092-4c24-8a5f-0f54d539d0d8"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-20f7ad58-ea6d-4499-b2fa-6ae16a2c23a3",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/0503e979-8249-4191-bca8-7e357f743f91/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-26d0cdf5-6092-4c24-8a5f-0f54d539d0d8",
    "thumbnailNavigationPosition": "far-bottom"
  }
}