phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('176d8157c456bf77e564382229978387', -1, 1406754799, 1406754799, '36e33fc3', 3, 0, 0)

Line : 187
File : sessions.php