phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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 ('383f8d1d3fde61dbfeca0badbb5bd2ac', -1, 1398296604, 1398296604, '36d3e7dd', 2, 0, 0)

Line : 187
File : sessions.php