in the app store the newest release is 32.0.0 (platformVersionSpec >=32.0.0 <33.0.0) and this catalogue ships Nextcloud 34, so the store offers nothing this server can install and the app is not server-shipped — occ app:install cannot succeed. Note it was only ever an OCR backend for files_fulltextsearch, which needs a search-platform app behind it too, so acknowledging this alone does not produce a working OCR index.