Unable to play subtitles

[Bonteruel]

Hi. I played videos with subtitles in srt format before, but now, mkchromecast is not showing them, doesn't matter if the srt file is in utf-8 encoding or iso-8859-15. By the way, the filter :charenc='iso-8859-15' is not working anymore. Do I need to install or update something else? tried with the deb files and the sources with no difference. for the source version, I installed all suggested packages with apt. My distro is Debian 11 bullseye
Here the example of what I wrote and worked before and now has no effect
bin/mkchromecast --encoder-backend ffmpeg --video -i '/home/dave/Vídeos/movies/example.mp4' --subtitles '/home/dave/Vídeos/movies/example-es.srt':sub_charenc='ISO-8859-15'
P.D: I'm sure the encoding of the srt is that, because I checked it in gedit