phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './mopo_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 ('fc8b59e9a42e72c22fb61cd1d171feb7', -1, 1412135923, 1412135923, '17143f1b', 18, 0, 0)

Line : 191
File : sessions.php