On GNU/Linux Debian, the launcher was not set correctly, I had to execute this way ./.local/bin/play-with-mpv
So I needed to modify the executable to this path.
Changed the Play With MPV (server) on /home/floor/.local/share/applications/ to Exec=./.local/bin/play-with-mpv as it is a better consistent solution.
play-with-mpv works on ungoogled-chromium (to appear on search results).
On GNU/Linux Debian, the launcher was not set correctly, I had to execute this way
./.local/bin/play-with-mpv
So I needed to modify the executable to this path. Changed the Play With MPV (server) on /home/floor/.local/share/applications/ toExec=./.local/bin/play-with-mpv
as it is a better consistent solution. play-with-mpv works on ungoogled-chromium (to appear on search results).