Could not find type "AudioStreamOGGVorbis" in the current scope

Godot Version

<stable4.2>

Question

<

func play_bgm(what_bgm : AudioStreamOGGVorbis):
	if what_bgm == null:
		return

Why am I receiving an error could not find type "AudioStreamOGGVorbis" in the current scope ??

That’s because the class is called AudioStreamOggVorbis