Symphony Error

Symphony Fatal Database Error: Table './xanderad_database/sym_sessions' is marked as crashed and should be repaired

An error occurred while attempting to execute the following query
- SELECT SQL_CACHE `session_data` FROM `sym_sessions` WHERE `session` = 'f744ef4a515b91bd0a1510b8dc278362' LIMIT 1
Backtrace
- [/home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php:459]
- MySQL->__error();
- [/home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php:655]
- MySQL->query();
- [/home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php:743]
- MySQL->fetch();
- [/home/xanderad/public_html/xandercms/lib/core/class.session.php:188]
- MySQL->fetchVar();
- [:0]
- Session::read();
- [/home/xanderad/public_html/xandercms/lib/core/class.session.php:84]
- session_start();
- [/home/xanderad/public_html/xandercms/lib/core/class.cookie.php:107]
- Session::start();
- [/home/xanderad/public_html/xandercms/lib/core/class.cookie.php:98]
- Cookie->__init();
- [/home/xanderad/public_html/xandercms/lib/core/class.symphony.php:240]
- Cookie->__construct();
- [/home/xanderad/public_html/xandercms/lib/core/class.symphony.php:126]
- Symphony->initialiseCookie();
- [/home/xanderad/public_html/xandercms/lib/core/class.frontend.php:45]
- Symphony->__construct();
- [/home/xanderad/public_html/xandercms/lib/core/class.frontend.php:33]
- Frontend->__construct();
- [/home/xanderad/public_html/index.php:13]
- Frontend::instance();
- [/home/xanderad/public_html/index.php:25]
- renderer();
Database Query Log
- [0.0007] SET character_set_connection = 'utf8', character_set_database = 'utf8', character_set_server = 'utf8';
- [0.0001] SET CHARACTER SET 'utf8';
- [0.0028]SELECT SQL_CACHE t1.name, t2.page, t2.delegate, t2.callback FROM `sym_extensions` as t1 INNER JOIN `sym_extensions_delegates` as t2 ON t1.id = t2.extension_id WHERE t1.status = 'enabled' ORDER BY t2.delegate, t1.id ASC;

Fatal error: Uncaught exception 'DatabaseException' with message 'MySQL Error (145): Table './xanderad_database/sym_sessions' is marked as crashed and should be repaired in query: SELECT SQL_CACHE `session_data` FROM `sym_sessions` WHERE `session` = 'f744ef4a515b91bd0a1510b8dc278362' LIMIT 1' in /home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php:807 Stack trace: #0 /home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php(459): MySQL->__error() #1 /home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php(655): MySQL->query('SELECT `session...', 'ASSOC') #2 /home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php(743): MySQL->fetch('SELECT `session...') #3 /home/xanderad/public_html/xandercms/lib/core/class.session.php(188): MySQL->fetchVar('session_data', 0, 'SELECT `session...') #4 /home/xanderad/public_html/xandercms/lib/core/class.session.php(161): Session::read('f744ef4a515b91b...') #5 [internal function]: Session::write('f744ef4a515b91b...', '') #6 [internal function]: session_writ in /home/xanderad/public_html/xandercms/lib/toolkit/class.mysql.php on line 807