A test, Synology's PHP 7.3 has built-in ImageMagick, while 7.2 does not have these. So I decided to use PHP 7.3, PHP 7.4. I found that there were errors when uploading some music. Using PHP 7.2 again is correct, confusing.莫斯科没有眼泪.mp3 瓶中沙.mp3
I believe this problem was fixed by the latest FileRun update 2020.11.21.
Customer support service by UserEcho