If you faced this error in WHM >> RVsitebuilder Manager

Try to SSH to the server as root and run
perl /var/cpanel/rvglobalsoft/rvsitebuilder/panelmenus/cpanel/scripts/autofixphpini.pl

If it cannot fix, please run the following command to see the result.
lsattr /usr/local/cpanel/3rdparty/etc/php.ini

If you found the result is  -----a------- , please run command
chattr -a /usr/local/cpanel/3rdparty/etc/php.ini

And try to run autofix again
perl /var/cpanel/rvglobalsoft/rvsitebuilder/panelmenus/cpanel/scripts/autofixphpini.pl

If you found the result is  -----i------- , please run command
chattr -i /usr/local/cpanel/3rdparty/etc/php.ini

And run:
perl /var/cpanel/rvglobalsoft/rvsitebuilder/panelmenus/cpanel/scripts/autofixphpini.pl