https://github.com/ganeshrvel/openmtp/blob/81be8a3dae70786665b7fd6c14f2fcdefc237d36/app/containers/HelpFaqsPage/components/HelpPhoneNotRecognized.jsx#L383
Quit Google drive, Android File Transfer, Dropbox, OneDrive, Preview (for macOS ventura) or any other app that might be reading USB