phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('f705b895c30dac3f630e26e6cc2c2622', -1, 1429621726, 1429621726, '369e98d4', -1, 0, 0)

Line : 187
File : sessions.php