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 ('ea5cf9e3422fec351cc4a1b537c3ff5b', -1, 1369323823, 1369323823, '36ea2a10', -1, 0, 0)

Line : 172
File : sessions.php