Bug (v17.3.3 - 76) : unable to uninstall by folder name

[AndroidDeveloperLB]

So suppose I want to remove YouTube music. The package name is "com.google.android.apps.youtube.music".
The folder, as Debloater says, is "/system/product/app/YouTubeMusicPrebuilt".

Writing "debloat -h", I can see this:

-d [app label|app folder name]   uninstall apps (use debloat -d -h)

So I tried this:

debloat -d /system/product/app/YouTubeMusicPrebuilt

It says it doesn't exist:

/system/product/app/YouTubeMusicPrebuilt doesn't exist in /system

And I also tried :

debloat -d com.google.android.apps.youtube.music

But this says it's not a system app, even though it is:

com.google.android.apps.youtube.music is not a system app