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 ('493cb3aafbbf64c775af98a5a09c000b', -1, 1432294063, 1432294063, '36a6374a', -1, 0, 0)

Line : 172
File : sessions.php