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 ('110d56f2cc9ed426fd366c7af2d9e568', -1, 1406623192, 1406623192, '365a7f0a', -1, 0, 0)

Line : 187
File : sessions.php