Plesk Repair Kit shows a warning:
Warning: Checking for custom configuration templates Some custom configuration templates have been found. The custom templates have higher priority than default templates in case of configs generation Please check documentation for details: https://docs.plesk.com/current/redirect.html?book=advanced-administration-guide-linux&page=68693.htm
LiteSpeed extension is installed in Plesk.
LiteSpeed extension created a custom template during the installation process.
This behavior is defined by the extension developers (LiteSpeed Technologies Inc.).
This warning can be safely ignored.