("m_header" is null) Music not playing while in jukebox [1.21.10]

[ThatOneTomato]

If i try to play some certain music files (not all, but some)
It just doesn't play music. The log says:

[15:08:51 WARN]: Exception in thread "AudioPlayerThread" java.lang.RuntimeException: javax.sound.sampled.UnsupportedAudioFileException: not a MPEG stream:Cannot invoke "javazoom.jl.decoder.Header.version()" because "m_header" is null
[15:08:51 WARN]: at custom-discs-5.1.2.jar//me.Navoei.customdiscsplugin.PlayerManager.lambda$playAudio$3(PlayerManager.java:99)
[15:08:51 WARN]: at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
[15:08:51 WARN]: at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
[15:08:51 WARN]: at java.base/java.lang.Thread.run(Thread.java:1583)
[15:08:51 WARN]: Caused by: javax.sound.sampled.UnsupportedAudioFileException: not a MPEG stream:Cannot invoke "javazoom.jl.decoder.Header.version()" because "m_header" is null
[15:08:51 WARN]: at custom-discs-5.1.2.jar//javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioFileFormat(MpegAudioFileReader.java:449)
[15:08:51 WARN]: at custom-discs-5.1.2.jar//org.tritonus.share.sampled.file.TAudioFileReader.getAudioInputStream(TAudioFileReader.java:387)
[15:08:51 WARN]: at custom-discs-5.1.2.jar//org.tritonus.share.sampled.file.TAudioFileReader.getAudioInputStream(TAudioFileReader.java:329)
[15:08:51 WARN]: at custom-discs-5.1.2.jar//javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioInputStream(MpegAudioFileReader.java:583)
[15:08:51 WARN]: at custom-discs-5.1.2.jar//javazoom.spi.mpeg.sampled.file.MpegAudioFileReader.getAudioInputStream(MpegAudioFileReader.java:493)
[15:08:51 WARN]: at custom-discs-5.1.2.jar//me.Navoei.customdiscsplugin.PlayerManager.getAudioInputStream(PlayerManager.java:339)
[15:08:51 WARN]: at custom-discs-5.1.2.jar//me.Navoei.customdiscsplugin.PlayerManager.lambda$playAudio$3(PlayerManager.java:96)
[15:08:51 WARN]: ... 3 more

Why is that so and why only some files? I don't know if the "mpeg" stream is a problem, i just downloaded those and uploaded them on filebin.

[Athar42]

This error state that the file is not a valid MP3 file.
Either your download did fail (maybe wrong download link), but as long as I remember, we still not support Filebin which doesn't allow direct file download.

As such, if you go to your server files then => plugins/CustomDiscs/musicdata
Download the "kind of music file" you are supposed to got, and then open that file with the notepad (not the audio player), you will probably get some text starting with

[Athar42]

So in short : Download from filebin isn't supported.

Use google drive (with the direct link finder you can see in the readme of the plugin), or any other link were you can directly download the wanted file (sharing on Discord and using the link of the file (not the message) is working too).

Or directly put the file inside the music folder : plugins/CustomDiscs/musicdata (no server restart needed)