phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './illustra_phpbb1/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ec83f77ac326c570b2fd9436164426cb', -1, 1406138091, 1406138091, '36523c69', -1, 0, 0)

Line : 187
File : sessions.php