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 ('5253f255063bb510f521bb7aa4e09df1', -1, 1369287618, 1369287618, '36ea4337', -10, 0, 0)

Line : 187
File : sessions.php