python-vlc about wasapi generic error: cannot activate client (error 0x88890004)

[PLL-L]

environment：

  windows 10 x64
  VLC media player x64 3.0.18
  python-vlc 3.0.1822

code:

  import vlc
  p = vlc.MediaPlayer(r"./WAV/37028.wav")
  p.play()

output： 0 wasapi generic error: cannot activate client (error 0x88890004)

File exists May I ask how the boss can solve it THANKS!