Child Theme Configurator error on “analyze”

I am using Relative URL and am creating child theme (after the fact). I am using a WordPress Plugin called [Child Theme Configurator 2.3.0.4] to create the child theme. In the process of creating the child theme, the Plugin analyzed my current theme and returned the following error:

Notice: ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush in /home2/bobgrine/public_html/wp-content/plugins/relative-url/relative-url.php on line 133

Is there a fix, or update that might correct this error?

Thanks,
Bob Griner