Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/a6c14b04-5c4a-4f61-adf2-ed5efd355f7f/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-56e8b9bd-2285-4ab4-b476-e99c3b90023e",
      "cw-82916cf7-218d-4b59-8cba-f10a508759d9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cdf58fb4-5262-4325-ab00-9f243551b822",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/a6c14b04-5c4a-4f61-adf2-ed5efd355f7f/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-82916cf7-218d-4b59-8cba-f10a508759d9",
    "thumbnailNavigationPosition": "far-bottom"
  }
}