Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/de4f8fe9-1d99-45c2-a0bb-6dcb09e64512/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-08084505-4c53-465f-a000-bb2956e0a259",
      "cw-9d58a033-f971-4b34-83fd-29bba47a6fdf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c53e7f80-5d8e-4c6a-b399-0737ca79046b",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/de4f8fe9-1d99-45c2-a0bb-6dcb09e64512/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9d58a033-f971-4b34-83fd-29bba47a6fdf",
    "thumbnailNavigationPosition": "far-bottom"
  }
}