Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/eca6ff75-1df0-4012-a6eb-bbaf897db90f/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f7f9b0fd-27ef-4a1b-96db-9c629e02862a",
      "cw-d225f110-fdf5-47ac-8f2c-b8c0651e64db"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7638eb81-0f09-468f-979e-c5fb3b756d04",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/eca6ff75-1df0-4012-a6eb-bbaf897db90f/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d225f110-fdf5-47ac-8f2c-b8c0651e64db",
    "thumbnailNavigationPosition": "far-bottom"
  }
}