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 ('b2281b4c93228bad65b747c5c81e04c3', -1, 1406828049, 1406828049, '36c51323', -1, 0, 0)

Line : 172
File : sessions.php