phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('b37b2fac2018fd74a2379b99d784bc90', -1, 1413953086, 1413953086, '36cc5ee4', 2, 0, 0)

Line : 187
File : sessions.php