It works on my side. Is your sound in the “Sounds” folder?
If yes, then you probably added a subfolder, right? In that case, you need to include the subfolder name when playing the sound.
For example:
"subfolderName/soundName"
So if your subfolder's name is "menuSounds" and your sound is called "buttonSound"; you need to play by name using "menuSounds/buttonSound"