Warning : require(/home/vol1_4/epizy.com/epiz_34224113/htdocs/wp-includes/class-wp-duotune.php): failed to open stream: No such file or directory in /home/vol1_4/epizy.com/epiz_34224113/htdocs/wp-settings.php on line 178
Fatal error : require(): Failed opening required ‘/home/vol1_4/epizy.com/epiz_34224113/htdocs/wp-includes/class-wp-duotune.php’ (include_path=‘.:/usr/share/pear/’) in /home/vol1_4/epizy.com/epiz_34224113/htdocs/wp-settings.php on line 178
That file seems like it is related to Duotune. Is this a plugin or theme that you installed on WordPress? If you remove the plugin does it fix the problem?