ISV-200W rattling

I have the ISV-200W for over a year now and today I noticed while handling it I hear something rattling inside. Any idea what it would be or troubleshoot? Everything appears to be working fine. No exposure to leaked bags ever.

Please check whether the sound is coming from the black body part or the stainless steel barrel part?
Is it possible to send the problem video and order information to email

I opened the slider case and it’s not in there. It is inside the black part of the sous vide