Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/e75f990b-79d7-4aa7-8fad-f1f142dd311d/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fd16cec3-6b81-4a90-90f3-2cfe198071b6",
      "cw-c780032b-9a5d-41ef-8758-dce601ad03bb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5af3519e-79e0-4ad0-9587-43827fcc91ca",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/e75f990b-79d7-4aa7-8fad-f1f142dd311d/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c780032b-9a5d-41ef-8758-dce601ad03bb",
    "thumbnailNavigationPosition": "far-bottom"
  }
}