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 ('5e4d347dfb212ce5dd7e51299064aaf2', -1, 1406938924, 1406938924, '365b87a1', -1, 0, 0)

Line : 172
File : sessions.php