sweetalert2 versions 11.4.9 and above are vulnerable to hidden functionality that was introduced by the maintainer. The package outputs audio and/or video messages that do not pertain to the functionality of the package and is not included in versions 11.0.0 – 11.4.8.
Workaround
Use a version 11.0.0 – 11.4.8 of the package until the maintainer releases a fix.