App package iframe integration- webcall initiating error (Violation Errors)

Hii, In my cli app package index page i am trying to use one iframe →

in this microphone allow option i am facing issues like this -> **[Violation] Permissions policy violation: microphone is not allowed in this document.** Due to this error i **can't able to initiate the webcall** . Can anyone please explain why this error was happen and how to rectify this