Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/72ac768e-e3e8-45ce-baee-e4735631c716/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-79e3cfc2-c9b7-4739-89b9-abc889aff54c",
      "cw-b9ea4019-31de-49e0-93ab-1fb9f42f8c58"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3eaf4b61-d6a8-47ae-aa73-2e2a9bc479fc",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/72ac768e-e3e8-45ce-baee-e4735631c716/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b9ea4019-31de-49e0-93ab-1fb9f42f8c58",
    "thumbnailNavigationPosition": "far-bottom"
  }
}