Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/12d3e9dd-0482-4157-be20-fdadfa55020d/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e30296ff-87fb-4451-be21-4b9ac73671ac",
      "cw-bf842a55-38c7-4421-abe1-9ab2ea4806d7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-82a7d185-3c11-437d-9ef3-79185f7596dd",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/12d3e9dd-0482-4157-be20-fdadfa55020d/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bf842a55-38c7-4421-abe1-9ab2ea4806d7",
    "thumbnailNavigationPosition": "far-bottom"
  }
}