Matrix voice is recording empty voice

my matrix voice used to work and suddenly it stopped listening to people.
actually it is working and detected however the output is empty.
It is really urgent and I don’t know what happened.
let me know

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As mentioned in the email, please provide the following so I can get a better sense of your setup:

  • What does your recording script look like?
  • Pi version, OS?
  • Can you send me the output of dpkg -l | grep matrix ?
  • Additionally, are you using a 5V 2.5A power supply?