Hello. I am trying to get the DesignThemes Core Shortcode Plugin to work, but it returns a 500 error every time I activate it. I’ve tried installing both through WordPress and manually via FTP. I’ve also updated the server to your recommended settings. Below is the error that gets returned. Do you have any suggestions? Thank you!

[23-Jun-2018 12:51:32 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function mb_convert_encoding() in /home/mosoluti/candle.m2osolutionsllc.com/wp-content/plugins/designthemes-core-features/page-builder/pagebuilder.php:164

Stack trace:

#0 /home/mosoluti/candle.m2osolutionsllc.com/wp-includes/class-wp-hook.php(286): DTPageBuilder->dtthemes_modules_init(”)

#1 /home/mosoluti/candle.m2osolutionsllc.com/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)

#2 /home/mosoluti/candle.m2osolutionsllc.com/wp-includes/plugin.php(453): WP_Hook->do_action(Array)

#3 /home/mosoluti/candle.m2osolutionsllc.com/wp-admin/admin.php(156): do_action(‘admin_init’)

#4 /home/mosoluti/candle.m2osolutionsllc.com/wp-admin/plugins.php(10): require_once(‘/home/mosoluti/…’)

#5 {main}

thrown in /home/mosoluti/candle.m2osolutionsllc.com/wp-content/plugins/designthemes-core-features/page-builder/pagebuilder.php on line 164