Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.participatory-archives.ch/SGV_10A_00031_003_mit_Schutz/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-317816b0-3aa0-4515-aeba-e316a4988a40",
      "cw-0191a3dc-278e-4280-9bb1-40fce3eac367"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-56e98b5d-4d99-4dd0-94be-31ea17cf103d",
    "manifestId": "https://iiif.participatory-archives.ch/SGV_10A_00031_003_mit_Schutz/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": true,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0191a3dc-278e-4280-9bb1-40fce3eac367",
    "loadedManifest": "https://iiif.participatory-archives.ch/SGV_10A_00031_003_mit_Schutz/manifest.json"
  }
}