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 ('7211f1bf36a89bec74795d82902949e0', -1, 1398003164, 1398003164, '171421b0', 3, 0, 0)

Line : 187
File : sessions.php