Using Custom Vhost Entries for Webmail, MySQL, Etc.

[akong]

I have restart apache and I can see roundcube webmail.
But I got error message on web.

CONFIGURATION ERROR

config.inc.php was not found.
Please read the INSTALL instructions!

And I found error log.

[Tue Mar 31 23:30:05 2015] [error] [client 219.85.218.78] PHP Warning: realpath(): open_basedir restriction in effect. File(/etc/sentora/configs/roundcube/roundcube_config.inc.php) is not within the allowed path(s): (/etc/sentora/panel/etc/apps/webmail:/var/sentora/temp/) in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube_config.php on line 250, referer: http://webmail.minsubnb.com.tw/
[Tue Mar 31 23:30:05 2015] [error] [client 219.85.218.78] PHP Warning: Error writing to log file /etc/sentora/panel/etc/apps/webmail/logs/errors; Please check permissions in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube.php on line 1147, referer: http://webmail.minsubnb.com.tw/
[Tue Mar 31 23:30:05 2015] [error] [client 219.85.218.78] PHP Warning: SQLSTATE[28000] [1045] Access denied for user 'roundcube'@'localhost' (using password: NO) in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube.php on line 1246, referer: http://webmail.minsubnb.com.tw/
[Tue Mar 31 23:30:05 2015] [error] [client 219.85.218.78] PHP Warning: Error writing to log file /etc/sentora/panel/etc/apps/webmail/logs/errors; Please check permissions in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube.php on line 1147, referer: http://webmail.minsubnb.com.tw/
[Tue Mar 31 23:30:05 2015] [error] [client 219.85.218.78] PHP Warning: config.inc.php was not found. in /etc/sentora/panel/etc/apps/webmail/program/lib/Roundcube/rcube.php on line 1246, referer: http://webmail.minsubnb.com.tw/

How to fix it?