Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/54877799-7dc5-4253-8c6b-66176a49ace5/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5953c7f7-37f0-4ed8-a90f-ff103047f53d",
      "cw-b5149ec7-2de4-4fdd-a104-a7812b5fb4aa"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-deddbdc6-81c8-4296-a2d2-da3dff352b24",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/54877799-7dc5-4253-8c6b-66176a49ace5/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b5149ec7-2de4-4fdd-a104-a7812b5fb4aa",
    "thumbnailNavigationPosition": "far-bottom"
  }
}