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 ('c0a3606f5a0729eaf3fb71de56c8f799', -1, 1397972548, 1397972548, '36e278b7', -1, 0, 0)

Line : 187
File : sessions.php