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 ('756f2b61fb02c501b1555c8983988792', -1, 1413886587, 1413886587, '3652a62d', 12, 0, 0)

Line : 187
File : sessions.php