Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/56900eba-1f50-4675-89c2-3b309f1d9dc0/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f2696197-4417-4cba-bac3-55e0c7159363",
      "cw-47f7e3a8-1031-47b6-a8c6-2de78ad56a59"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1a80e51a-1111-43a6-acd4-7aa2555d39ab",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/56900eba-1f50-4675-89c2-3b309f1d9dc0/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-47f7e3a8-1031-47b6-a8c6-2de78ad56a59",
    "thumbnailNavigationPosition": "far-bottom"
  }
}