Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/3bd974c1-c3cf-47ae-abc7-7a4f96d3a916/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-172b8962-65ae-4f4d-99aa-8b6f0783d8d1",
      "cw-fefb78d8-c39e-40c1-af25-206ec8652d51"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d19cc470-1428-4513-8262-90fa67215026",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/3bd974c1-c3cf-47ae-abc7-7a4f96d3a916/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fefb78d8-c39e-40c1-af25-206ec8652d51",
    "thumbnailNavigationPosition": "far-bottom"
  }
}