Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/73aa9db7-d20d-4e4a-b9f2-add743f3a935/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0c9ef07e-4c79-4d7c-8e47-5d91732eaa14",
      "cw-f2bc5007-27df-414b-a298-bfb06b7d26db"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c29a72d7-7221-40f8-9bfa-25be2858be6e",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/73aa9db7-d20d-4e4a-b9f2-add743f3a935/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f2bc5007-27df-414b-a298-bfb06b7d26db",
    "thumbnailNavigationPosition": "far-bottom"
  }
}