Error 500 Internal Server

[Yossi17]

Dears.

Help me thank my wordpress I am down and my hosting provider tells me the following:

Dear Customer,

For our part, the service is not fallen :

The error that throws your site :

[23-Oct-2015 18:14:51 UTC] PHP Warning: include_once(admin/options.php): failed to open stream: No such file or directory in /home/user/public_html/wp-content/themes/SmartIT.Premium.Responsive.WordPress.Theme.v1.1.2/smartit/functions.php on line 4
[23-Oct-2015 18:14:51 UTC] PHP Warning: include_once(): Failed opening ‘admin/options.php’ for inclusion (include_path=’.:/opt/alt/php55/usr/share/pear:/opt/alt/php55/usr/share/php’) in /home/user/public_html/wp-content/themes/SmartIT.Premium.Responsive.WordPress.Theme.v1.1.2/smartit/functions.php on line 4
[23-Oct-2015 18:14:51 UTC] PHP Warning: include_once(THEMEMAKERS_THEME_PATH/admin/types_registration.php): failed to open stream: No such file or directory in /home/user/public_html/wp-content/themes/SmartIT.Premium.Responsive.WordPress.Theme.v1.1.2/smartit/functions.php on line 13
[23-Oct-2015 18:14:51 UTC] PHP Warning: include_once(): Failed opening ‘THEMEMAKERS_THEME_PATH/admin/types_registration.php’ for inclusion (include_path=’.:/opt/alt/php55/usr/share/pear:/opt/alt/php55/usr/share/php’) in /home/user/public_html/wp-content/themes/SmartIT.Premium.Responsive.WordPress.Theme.v1.1.2/smartit/functions.php on line 13
[23-Oct-2015 18:14:51 UTC] PHP Fatal error: Class ‘Thememakers_Entity_Custom_Sidebars’ not found in /home/user/public_html/wp-content/themes/SmartIT.Premium.Responsive.WordPress.Theme.v1.1.2/smartit/functions.php on line

[erchache2000]

Your premium theme is breaking server config.

Upgrade your theme manually via ftp/sftp.

Did you try with other differente theme?