Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/676eec1d-a09a-4cdb-a40d-f2afcab408e6/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0d38a4c7-ad15-4e45-996e-d2404c175be9",
      "cw-7cff5282-2550-4d24-9e4e-06d164a40cb7"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a5d73910-ef79-488e-8af1-082819166be4",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/676eec1d-a09a-4cdb-a40d-f2afcab408e6/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7cff5282-2550-4d24-9e4e-06d164a40cb7",
    "thumbnailNavigationPosition": "far-bottom"
  }
}