*** Unhandled NullPointerException: update/render error

[TheBrunoRM]

update/render error

ver 0.5.1 os Windows 10 (amd64) jre 1.8.0_251 (Oracle Corporation) trace

java.lang.NullPointerException
	at org.newdawn.slick.openal.SoundStore.setMusicPitch(SoundStore.java:539)
	at org.newdawn.slick.Music.setPitch(Music.java:397)
	at itdelatrisu.opsu.audio.MusicController.setPitch(MusicController.java:484)
	at itdelatrisu.opsu.states.game.PauseOverlay.backToSongMenu(PauseOverlay.java:111)
	at itdelatrisu.opsu.states.game.PauseOverlay.checkButtonClick(PauseOverlay.java:177)
	at itdelatrisu.opsu.states.game.PauseOverlay.mouseReleased(PauseOverlay.java:219)
	at yugecin.opsudance.core.input.Input.dispatch(Input.java:199)
	at yugecin.opsudance.core.input.Input.poll(Input.java:127)
	at yugecin.opsudance.core.DisplayContainer.run(DisplayContainer.java:220)
	at yugecin.opsudance.OpsuDance.rungame(OpsuDance.java:75)
	at yugecin.opsudance.OpsuDance.start(OpsuDance.java:53)
	at yugecin.opsudance.core.Entrypoint.main(Entrypoint.java:80)

info dump

> DisplayContainer dump
OpenGL version: 4.6.0 NVIDIA 451.48(NVIDIA Corporation)
state is Game
> BaseOpsuState dump
isDirty: false
> Game dump
beatmap:  setid 695316 beatmapid 1473301 name MOMOIRO CLOVER Z - SANTA SAN [Gift]
objectidx: 204
time: 0ms
< DisplayContainer
tNextState is null
overlay Game
> pause overlay is active
< DisplayContainerloading sound: none
playing map:  setid 695316 beatmapid 1473301 name MOMOIRO CLOVER Z - SANTA SAN [Gift]
 at time 0