Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/qstarter29/iiif/ec7b5a45-a669-4642-aebc-01657c921c25/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5fddf4c4-23d3-4fbc-89e8-3bf6e836320c",
      "cw-83db2019-1d1b-479e-a2eb-fcc85d57e24c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7b42c213-fb8d-490a-9c2e-a32f8a818b02",
    "manifestId": "https://iiif.quartexcollections.com/qstarter29/iiif/ec7b5a45-a669-4642-aebc-01657c921c25/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-83db2019-1d1b-479e-a2eb-fcc85d57e24c",
    "thumbnailNavigationPosition": "far-bottom"
  }
}