I set languages=pt in uosc.conf, but subtitles are not being fetched.
To check whether the issue was specific to Portuguese, I changed it to languages=es, and subtitles were fetched correctly.
Portuguese subtitles are confirmed to be available for this movie on opensubtitles.com.
No errors appear in the console.

I set
languages=ptinuosc.conf, but subtitles are not being fetched.To check whether the issue was specific to Portuguese, I changed it to
languages=es, and subtitles were fetched correctly.Portuguese subtitles are confirmed to be available for this movie on opensubtitles.com.
No errors appear in the console.