Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/5b51816b-ff7e-4aa3-977a-c4e79b32f62e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a6ef1881-91f8-44dd-a6b2-506639f1dc78",
      "cw-bf0de2e6-b5cd-43d3-bd64-c6fc7295ada6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4f54f016-7d3c-4343-9664-89cf6eef869e",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/5b51816b-ff7e-4aa3-977a-c4e79b32f62e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bf0de2e6-b5cd-43d3-bd64-c6fc7295ada6",
    "thumbnailNavigationPosition": "far-bottom"
  }
}